title: In Response to: American Professional Football Concussions During the 2013 to 2014 Season.
authors.affiliation: Department of Neurological Surgery, University of California, San Francisco, San Francisco, California.
authors.forename: Marco D
authors.initials: MD
authors.lastname: Sorani
authors.forename: Adam R
authors.initials: AR
authors.lastname: Ferguson
mesh_terms: D001924:Brain Concussion / Q000175:diagnosis / Q000453:epidemiology*; D005538:Football / Q000293:injuries*; D006801:Humans; D008297:Male; D014481:United States