[1] Florey Inst Neurosci & Mental Hlth, Heidelberg, Vic 3084, Australia
[2] Univ Calgary, Fac Kinesiol, Sport Injury Prevent Res Ctr, Calgary, AB, Canada
[3] Swiss Concuss Ctr, Zurich, Switzerland
[4] Schulthess Clin, Spine Unit, Zurich, Switzerland
[5] Int Ice Hockey Federat, Zurich, Switzerland
[6] North Shore Univ Hlth Syst, Dept Neurosurg, Evanston, IL USA
[7] Univ Michigan, Dept Kinesiol, Ann Arbor, MI 48109 USA
[8] Boston Univ, Sch Med, Ctr Study Traumat Encephalopathy, Boston, MA 02215 USA
[9] Toronto Western Res Inst, Div Hlth Care & Outcomes Res, Toronto, ON, Canada
[10] Univ Missouri Kansas City, Dept Psychol, State Coll, PA USA
[11] Psychol & Neurobehav Assoc Inc, Miami, FL USA
[12] Univ Maryland, Dept Psychol, Baltimore, MD 21201 USA
[13] Florey Inst Neurosci & Mental Hlth, Austin Campus, Heidelberg, Vic, Australia
[14] Murdoch Childrens Res Inst, Parkville, Vic, Australia
[15] Univ Washington, Dept Neurol Surg, Seattle, WA 98195 USA
[16] Univ Calgary, Dept Kinesiol, Calgary, AB, Canada
[17] Oslo Univ Hosp, Dept Orthosurg, Oslo, Norway
[18] Univ Hosp Zurich, Dept Neurol, Zurich, Switzerland
[19] Schulthess Clin, Zurich, Switzerland
[20] UCLA Steve Tisch BrainSPORT Program, Dept Neurosurg, Los Angeles, CA USA
[21] Mattel Childrens Hosp UCLA, Dept Pediat Pediat Neurol, Los Angeles, CA USA
[22] Univ N Carolina, Sports Med Res Lab, Chapel Hill, NC USA
[23] Univ Washington, Dept Rehabil Med Orthopaed & Sports Med, Seattle, WA 98195 USA
[24] Univ Washington, Dept Neurol Surg, Seattle, WA 98195 USA
[25] Red Sox Fdn & Massachusetts Gen Hosp Home Base Pr, Harvard Med Sch, Phys Med & Rehabil, Boston, MA USA
[26] Univ Toronto, Dept Neurosurg, Toronto, ON, Canada
[27] Univ Ottawa, Int Paralymp Comm Med Comm, Carleton Univ, Sport Med Clin, Ottawa, ON, Canada
[28] Sports Neurol Clin, Brighton, MI USA
[29] SUNY Buffalo, Dept Orthopaed, Buffalo, NY USA
[30] Univ Melbourne, Ctr Hlth Exercise & Sports Med, Melbourne, Vic, Australia
[31] Melbourne Brain Ctr, Florey Inst Neurosci & Mental Hlth, Austin Campus, Heidelberg, Vic, Australia
[32] Olymp Pk Sports Med Ctr, Melbourne, Vic, Australia
[33] Univ Calif San Francisco, Dept Neurosurg, San Francisco, CA 94143 USA
[34] Med Coll Wisconsin, Neurosurg, Milwaukee, WI 53226 USA
[35] Childrens Hosp Boston, Sports Med, Boston, MA USA
[36] Childrens Hosp Boston, Dept Emergency Med, Boston, MA USA
[37] Tokushima Daigaku Byoin, Tokushima, Japan
[38] Univ Pretoria, Fac Hlth Sci, Sect Sports Med, Johannesburg, South Africa
[39] Univ Witwatersrand, Fac Hlth Sci, Dept Emergency Med, Johannesburg, South Africa
[40] Princeton Univ, Dept Athlet Med, Princeton, NJ 08544 USA
[41] Univ Calgary, Fac Kinesiol, Calgary, AB, Canada
[42] Vanderbilt Univ, Med Ctr, Dept Neurol Surg, Franklin, TN USA
[43] Vanderbilt Univ, Med Ctr, Vanderbilt Sports Concuss Ctr, Franklin, TN USA
[44] Toronto Western Hosp, Div Neurosurg, Toronto, ON, Canada
[45] Univ Toronto, Toronto, ON, Canada
[46] Canadian Sports Concuss Project, Toronto, ON, Canada
[47] ICHIRF, London, England
[48] Slingeland Ziekenhuis, Dept Neurol, Doetinchem, Netherlands