Position-Specific Circumstances of Concussions in the NFL: Toward the Development of Position-Specific Helmets. - Lessley, David J.; Kent, Richard W.; Cormier, Joseph M.; Sherwood, Christopher P.; Funk, James R.; Crandall, Jeff R.; Myers, Barry S.; Arbogast, Kristy B. (Annals of Biomedical Engineering, 2020)