title: Letters.
authors.affiliation: a Committee on Research and Education American Orthopedic Society of Sports Medicine.
authors.forename: J A
authors.initials: JA
authors.lastname: Nicholas
authors.affiliation: b El Paso , Texas.
authors.forename: O H
authors.initials: OH
authors.lastname: Ellis
authors.affiliation: c Los Alamos , New Mexico.
authors.forename: M C
authors.initials: MC
authors.lastname: Johnson
authors.affiliation: d New Orleans.
authors.forename: G V
authors.initials: GV
authors.lastname: Frankhouser
authors.affiliation: e St. Mary's Academy Winnipeg , Manitoba.
authors.forename: D R
authors.initials: DR
authors.lastname: McVeigh