Medical research

FILE - In this March 12, 2020, file photo, Big Ten Commissioner Kevin Warren addresses the media in Indianapolis. The Big Ten’s plan to play football this fall includes trying to save lives in the future. The conference announced Wednesday, Sept. 16, 2020, it would have a football season this fall. The Big Ten is setting up a cardiac registry to study the effects COVID-19 has on student-athletes' hearts. Big Ten Commissioner Kevin Warren said it will help all students, surrounding communities, and the entire nation. (AP Photo/Michael Conroy, File)

FILE - In this Sunday, May 31, 2020, substitutes for Borussia Dortmund, wearing face masks to protect against coronavirus, look on from the stands during the German Bundesliga soccer match between SC Paderborn 07 and Borussia Dortmund at Benteler Arena in Paderborn, Germany. The German Bundesliga will keep five substitutions for the 2020-21 season because of the coronavirus pandemic. The 36 clubs in the top two German men’s soccer leagues voted at a German Football League meeting Thursday, Sept. 3, 2020 to continue the rule for next season. (Lars Baron/Pool via AP, file)

FILE - In this Oct. 11, 2019, file image taken with a slow shutter speed a soccer player runs for the ball during the Euro 2020 group A qualifying soccer match in Prague, Czech Republic. A study, from the University of Glasgow and reported Monday, Oct. 21, in New England Journal of Medicine, of former professional soccer players in Scotland found that they were less likely to die of common causes such as heart disease and cancer compared with the general population but more likely to die from dementia. (AP Photo/Petr David Josek, File)

FILE - In this Jan. 8, 2019 file photo, Todd Trent, an uncle to Tyler Trent, speaks during a funeral for Tyler in Indianapolis. Tyler Trent, an avid Purdue fan, died on New Year's Day, following a bout with bone cancer. Cells from the Purdue University super fan and cancer activist are being used by cancer researchers to study the disease. (AP Photo/Darron Cummings, Pool File)