Visual tracking problems and silent concussions - WHY parents, the public and Optometrists need to know

Therefore, knowing that concussions can be identified 100% of the time with the King-Devick Test, here is another question for parents and the public to ask. Why are we not routinely administering the King-Devick Testing on children, 6 years and older, so that their optometric record establishes baseline in saccadic eye movement?

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Pop Warner Arizona partners with Mayo Clinic on tackling concussions

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Participants will take the King-Devick Test, which provides an objective measure of reaction time, eye movement and mental clarity.

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A Better Test for Evaluating Sports Concussion on the Sideline?

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The King-Devick test may be a more objective and accurate method for sideline evaluation of sports-related concussion than the Standardized Concussion Assessment Tool 3 (SCAT3), which is the current standard, according to research reported at the 56th Annual Scientific Meeting of the American Headache Society.

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Mayo Clinic Study Says Eye-Tracking Devices Offer Added Pilot Safety

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In the new study, Mayo Clinic researchers tested the feasibility of using a portable eye-tracking device [King-Devick Test] in a simulated environment as a way to detect the early phases of hypoxia.

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UF Helps Improve Subtle Concussion Diagnosis


In an article published this month in the journal “Neurology: Clinical Practice,” the researchers report that adding one simple vision test detected 100 percent of concussions that occurred during games or in practice.

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Simple test helps doctors catch more concussions on the field

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“This is the first study that has shown that adding a vision test helps to identify more athletes with concussion and shows the vision-based King-Devick test is very effective in a college setting,” said Dr. Laura Balcer, a professor of neurology and population health at NYU.

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LA Students Undergo 'Baseline' Tests To Measure Concussion Effects

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About 1,200 students at Loyola High School, including non-athlete students, are being given a series of tests, known as baseline concussion test, designed to measure brain function.

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Interview: Bert Vargas, MD, on SCAT3 vs King-Devick Test

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Bert Vargas, MD, compares two tools for evaluating sports-related concussion on the sidelines.

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Former pro soccer player Claire Zimmeck battles concussion syndrome

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Patients who are dealing with symptoms such as balance issues and vision problems are often referred to a neurologist such as Dr. Laura Balcer, who has done pioneering research on the link between eye movement and brain function.

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CMCC & Rugby Ontario Partner to Administer Baseline Concussion Measures For More Than 235 Junior Provincial Athletes

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Canadian Memorial Chiropractic College in Toronto volunteered their day to aid in the administration of baseline concussion measures with seven different Rugby Ontario junior provincial teams for over 235 athletes.

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Good Day Alabama for June 19, 2014

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Dr. Schaeffer and Dr. Lemak discuss King-Devick Test and concussions with Good Day Alabama.

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Saccadic eye training associated with improved reading fluency, study shows

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"The results of this pilot study suggest that the King-Devick remediation software may be effective in significantly improving reading fluency through rigorous practice of eye movements," Amaal Starling, MD, Mayo Clinic neurologist and a co-author of the study, said in the release.

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Mayo Clinic: In-School Eye Movement Training Improves Early Reading Fluency

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“The results of this pilot study suggest that the King-Devick remediation software may be effective in significantly improving reading fluency through rigorous practice of eye movements,” says Dr. Starling. “What our study also found was that there was an even greater improvement between first and third grade versus third and fourth graders, which means there may be a critical learning period that will determine reading proficiency.”

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This Way In: The Latest Concussion Research

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“Given the many brain pathways involved in concussion, we think that a combination of cognitive, balance and vision tests may be best to improve diagnosis of concussion in athletes,” says Laura Balcer, MD, Fellow of AAN, professor and vice chair of neurology at New York University Langone Medical Center.

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King-Devick Test CEO Joins Experts at White House Safe Sports Concussion Summit

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Dr. Devick is committed to making reliable and objective sideline concussion testing for all athletes accessible and affordable. "The King-Devick Test helps provide a safer sporting environment for youth athletes by accurately screening for concussion," he says. "It's our responsibility as parents, coaches and clinicians to identify concussions in order to remove them from play and allow children the proper time to recover from concussion so they can safely return to learn and play."

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Mayo Clinic says sideline test detects youth concussions

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Dr. Amaal Starling of the Mayo Clinic is co-author of the study. She said for youth athletes, "This is really the first accurate, rapid, cost effective, removal-from-play tool that is available for concussion screen."

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Dr. Lemak and Dr. Schaeffer talk concussions on Alabama Tonight

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Concussions and their treatment have become major topic in the sports world, but there is a new test called the "King-Devick" that might help faster detect when a player gets a concussion.

Kyle Burger spoke with Dr. Larry Lemak and Dr. Mark Schaeffer about the new test.

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Mayo Clinic researchers validate rapid sideline concussion test for youth athletes

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“The King-Devick test represents a rapid, accurate, and cost-effective tool to identify concussion on the sideline and make appropriate game-time, remove-from-play decisions,” Dr. Amaal Starling says.

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Staten Island soccer coach keeps kids safe with King-Devick test for concussion (with photos/video)

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Balancing fun and competition with safety, Ernest Murdukhayev, a director of SB4U Soccer Academy and the Jewish Community Center programs, is using the King-Devick test to assess the seriousness of any head bangs his players encounter.

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Guide to Concussion: Symptoms and How a Vision Test Can Help Diagnose It

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Neurologists now propose using the King-Devick vision test in the pre-season. This test takes about a minute and involves a timed reading of numbers from an iPad or from index cards. If a suspected concussion occurs during a sporting event, the test is administered, along with the usual balance and cognition tests, at the sidelines. Deviation from the baseline results can be diagnostic for concussion. Imaging and other testing in a hospital may be necessary.

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Vision Test Improves Concussion Detection

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"I do think this is enough to recommend this vision test be used routinely," Dr. Clugston commented. "This test is less subjective than some of the other tests used currently. An assessment of balance is always very subjective, and cognition tests can be too. But the vision test just involves reading numbers from a screen as fast you can. It is very simple and less easily manipulated by the athlete. But it is best used in combination with the standard tests."

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Vision Test Helps With Concussions

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Researchers found the time to complete the test was longer for 79-percent of players who were later found to have a concussion. When combined with other assessments, the sideline test helped diagnose 100-percent of concussions. Experts say using a vision based test on the sidelines may help detect concussions more quickly ... and keep athletes from getting injured further.

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Sideline concussion test gets a new thumbs-up

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The King-Devick test capitalizes on a subtle but important symptom of brain injury: a disruption in the eyes' ability to travel smoothly across a page, and to shift direction upon the brain's command.

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More Evidence That Vision Test on Sidelines May Help Diagnose Concussion

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The study provides more evidence that the King-Devick test, a one-minute test where athletes read single-digit numbers on index cards, can be used in addition to other tests to increase the accuracy in diagnosing concussion.

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Simple tests could improve sideline concussion diagnosis, study shows

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New research presented at the American Academy of Neurology's 66th Annual Meeting in Philadelphia indicates that a quick vision test, known as the King-Devick test, combined with a series of other simple tests, could yield near-perfect concussion detection rates on the sidelines of a game.

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Sport-related Concussions: Tips for the Coach

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Many sports medicine professionals suggest that those coaches who do not have immediate access to an athletic trainer use easy and reliable screening tools. One of the most effective screening tools is the King-Devick test. Personally, I recommend every high school and youth coach to use this screening tool. It is very easy to learn and does not require a medical professional to administer. The King-Devick test can be easily implemented into an existing concussion management protocol.

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Assessment, Management and Knowledge of Sport-Related Concussion: Systematic Review

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Concussion is hard to recognize and diagnose. Initial sideline assessment via the Sports Concussion Assessment Tool 3 (SCAT3), Child-SCAT3 or King-Devick test should be undertaken to identify athletes with concussion as part of a continuum of assessment modalities and athlete management.

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2013 Top Stories in Eye Care: Neuro-Ophthalmology

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PracticeUpdate: Would you sum up in a single sentence why you chose this development as the top story of the past year?

Dr. Press: The merging of technology available to administer tests such as the King-Devick saccade test, and how to dovetail this information with batteries such as the ImPACT Test, represent a significant advancement in clinical concepts as well as tools.

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United States Sports Academy Tackling Concussions in Southern Alabama Community

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One of the main benefits of this concussion program is the donation of an effective and reliable concussion screening device known as the King-Devick Test, an objective, rapid sideline screening test for concussions that can be administered by coaches, athletic trainers, and athletic support personnel.

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Staying Ahead of the Game

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The NYU Cover Story, notes: “Drs. Galetta and Balcer believe the King-Devick test works because at least 50 percent of the brain’s circuits are involved in vision. Thus the test can pick up deficiencies occurring across a wide range of neurological geography.

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University physician researches concussions

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“Right now, these tests — King-Devick, SCAT2, balance, computerized assessment — are considered the standard of care, or the best procedure, for diagnosing concussions,” head Notre Dame University Physician Dr. Jim Moriarty said. “The key for us is if you’re a physician on the sidelines, you’d like to know the tests you’re running are reliable. There are symptoms that confirm concussions, but most people don’t have that. Most people have the lesser symptoms which cause you to have doubts whether you’re making the right choice or not.”

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High Altitude Hypoxia Can Be Detected Before Symptoms Are Apparent, Mayo Clinic Study Finds

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The Mayo Clinic study team used the King-Devick neurocognitive performance test, which is commonly used to identify cognitive changes related to sports-related concussions, and to assess cognitive function under conditions of low oxygen-simulating altitude. The King-Devick test assesses the time in viewing, identifying and reading aloud a series of numbers on three consecutive test cards. Based on test times of 25 participants, the study concluded that the King-Devick test is an effective tool to detect "impairment of cognitive performance at a presymptomatic stage of hypoxia."

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Press Release: ImPACT® Partners with King-Devick Test in Support of Multifaceted Approach to Concussion Management

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The King-Devick Test is widely supported by published neurological research as an accurate and reliable method for identifying athletes with concussion.  "The partnership between King-Devick Test and ImPACT highlights the need for schools and organizations to utilize both remove-from-play and return-to-play concussion management tools to ensure the safety of all athletes," said Steve Devick chief executive officer of King-Devick Test.

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Visual Screening Test for Rapid Sideline Determination of Concussive and Sub-concussive Events

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The need for sideline rapid assessment of mild head injury is fundamental to limiting the deleterious effects of repeated impacts to the head. The great majority of athletes are at the youth sports level and not in collegiate or professional sports, which leaves many important decisions to be made by parents and coaches on the sideline. This structural element of sport is unlikely to change since allocating medically trained people to youth sports will require unavailable financial resources. Accordingly, empowering adults to administer a simple, rapid, yet effective test is paramount to preventing repeated head injury. As increasing evidence suggests that even mild impact to the head can lead to accruing neuropathology, it may be prudent to routinely perform sideline testing for players involved in even modest collisions. This could help avoid return to play of athletes with sub-concussive impacts as knowledge about head injury continues to evolve.

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Raising Canes: It's Great To Be A Miami Hurricane

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Steve Devick and Chris Nowinski discuss concussions and football with the University of Miami.

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Academy Provides Concussion Training to Area Football Coaches

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With help from an Association of Applied Sport Psychology (AASP) grant and King-Devick, the Academy has made presentations to more than 50 coaches about concussions and given training on how to use the King-Devick test to quickly and accurately determine on the sideline if any player has suffered head trauma. In addition, each coach and team received a comprehensive manuals about concussion safety, fact sheets, and King-Devick Playbooks that included the tests to administer on players.

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Raising Canes: Ahead Of The Game, Pt. Two (S3, E10)

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The latest episode of Raising Canes continues the showcase of Miami's industry-leading concussion testing procedures utilized by the sports medicine staff.

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King-Devick Test on the Today Show

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Dr. Rahul Jandial demonstrates King-Devick Test on the Today Show!

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High-tech, low-tech and concussion!

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The King-Devick Test (KD) is one solution that is relatively low-tech but has high-tech abilities and research supporting its use for TBI/concussion and sports. This test has been available for more than 25 years to assess oculomotor dysfunction.

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King-Devick Test: An Important Part of Sideline Concussion Screening Battery

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The K-D measures the time it takes for an athlete to read a series of single digit numbers displayed on index-sized cards. Previous studies of boxers and mixed martial arts (MMA) fighters (2), collegiate athletes in contact sports (3), and in a New Zealand rugby league (4,5) found that an increase (worsening) in the time needed to complete the one-minute K-D was predictive of concussion. While K-D detects fast eye (i.e. saccadic) movements, it also captures language and concentration, all of which have been shown to be impaired as a result of concussion.

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Rinkside Test Accurately Helps Detect Professional Ice Hockey Team's Concussions in Minutes

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The King-Devick Test has the benefit of providing objective baseline and post-injury data for rapid comparison. This may help athletic trainers and coaches determine whether players should be removed from games.

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Club Measures How Hard Rugby's Hits Really Are

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Last year he introduced to the club the King-Devick test, a screening that can help determine whether a player has suffered a concussive incident during the game.
A player does an initial test in the preseason to record a baseline score. The players are then tested after every game, and if anyone is three-seconds slower than his baseline score, he is deemed to have suffered a concussion. Because the test is calculated on an iPad, it can even be used during a game if a concussion is suspected.
Last year there were five concussions witnessed on the field, but another 17 were diagnosed through the King-Devick test (which is named after another King, not Doug).

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Sports Legacy Institute partners with MLL to create concussion program for 2013

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Major League Lacrosse will become the first professional sports organization to mandate the King-Devick test -- an objective rapid sideline screening test of concussions that a growing body of studies show is an effective test for concussion -- as an additional sideline assessment tool.

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The King of All Concussion Tests

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The K-D Test serves as a “remove from play” test and is actually more suited to a sports role than one might think. Since players can only be on the sidelines for a few minutes between plays or drives, time is of the essence. The player has to be assessed immediately; continued play with head trauma can be increasingly dangerous. “We do know that if you put a kid back in with concussive symptoms, he’s at really high risk to get hit again,” says Dr. Gillian Hotz of the University of Miami’s Miller School of Medicine.

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NFL's Progress on Concussions Blurred by Poor Sideline Testing

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Unlike SCAT, the King-Devick test is also more straightforward for a physician to score. It is not only less subjective than SCAT, but also more informative. In fact, in trials for the test, many concussed athletes have passed SCAT but failed the King-Devick test.

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New Study Supports Chicago Concussion Test System

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“As a direct result of the findings using the King-Devick Test, the club has implemented a wider concussion awareness program to assist in identification and management of concussion for the upcoming season,” Dr. Doug King, the senior author of the study, said in a news release.

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Why the NFL Sucks at Testing for Concussions

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The advantage of the King-Devick is that it’s much more straightforward for an inexperienced physician or coach to grade than the SCAT-2, which relies on subjective analysis of symptoms and test results. Many concussed athletes in the team’s trials have passed the SCAT-2 exam but failed the King-Devick Test.

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The unlikely man behind football-slamming documentary "Head Games"

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The King-Devick Test has emerged as one of the most promising tools for rapid sideline concussion diagnosis.

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Brainiac: How Chicagoan Steve Devick Is Tackling Concussions

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Steve Devick became involved in the concussion issue because of a graduate school thesis he co-wrote in 1976. That project—now known as the King-Devick Test—has emerged as one of the most promising tools for rapid sideline concussion diagnosis. What’s both beautiful and confounding about the test is its simplicity: it’s administered on three spiral-bound laminated cards, takes less than a minute to complete, and is simply pass/fail.

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King-Devick and Dave Duerson Foundation Team Up to Help Young Athletes

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On August 24, 2012 the Dave Duerson Foundation announced that they will be equipping all Chicago Public High Schools with the King-Devick test for sideline screening.  The Foundation, through individual and corporate sponsors, also announced plans to provide the test to schools in other major cities in the U.S.

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