title: National football league experiences with return to play after concussion.
authors.forename: Ira R
authors.initials: IR
authors.lastname: Casson
authors.forename: Elliot J
authors.initials: EJ
authors.lastname: Pellman
authors.forename: David C
authors.initials: DC
authors.lastname: Viano
mesh_terms: D001924:Brain Concussion / Q000503:physiopathology*; D005538:Football / Q000293:injuries*; D006801:Humans; D008297:Male; D038223:Post-Concussion Syndrome / Q000209:etiology; D020127:Recovery of Function