Allina doc: Many possible causes for Tinsley's enlarged heart

[Minnesota Public Radio, April 26, 2012] University of Minnesota Gophers football player Gary Tinsley died of an enlarged heart April 6, according to a Hennepin County Medical Examiner report released Wednesday.

Minneapolis Heart Institute researcher Dr. David Feldman told Tom Crann of All Things Considered that the condition could be caused by factors including genetic defects, infection or allergies.