[1] Florey Inst Neurosci & Mental Hlth, Heidelberg, Vic 3084, Australia
[2] Univ Calgary, Fac Kinesiol, Hotchkiss Brain Inst, Fac Med & Sport Injury Prevent Res Ctr, Calgary, AB T2N 1N4, Canada
[3] Int Ice Hockey Federat, Zurich, Switzerland
[4] Boston Univ, Med Ctr, Dept Neurosurg, Boston, MA 02215 USA
[5] Boston Univ, Med Ctr, Ctr Study Traumat Encephalopathy, Boston, MA 02215 USA
[6] Univ Zurich, Dept Neurol, Schulthess Clin, Zurich, Switzerland
[7] Federat Int Football Assoc Med Assessment & Res C, Zurich, Switzerland
[8] Psychol & Neurobehav Assoc Inc, State Coll, PA USA
[9] Univ Missouri, Kansas City, MO 64110 USA
[10] Univ Oslo, Dept Orthopaed Surg, Oslo Univ Hosp, Oslo, Norway
[11] Univ Oslo, Fac Med, Oslo, Norway
[12] Oslo Sports Trauma Res Ctr, Oslo, Norway
[13] Int Olymp Comm, Lausanne, Switzerland
[14] Univ Toronto, Div Neurosurg, Toronto, ON, Canada
[15] Athlet Edge Sports Med, Concuss Management Program, Toronto, ON, Canada
[16] Univ Michigan, Dept Neurol, Michigan NeuroSport, Ann Arbor, MI 48109 USA
[17] Int Rugby Board, Dublin, Ireland
[18] Vanderbilt Univ, Med Ctr, Dept Neurosurg, Nashville, TN USA
[19] Vanderbilt Univ, Med Ctr, Dept Orthopaed Surg, Nashville, TN USA
[20] Vanderbilt Univ, Med Ctr, Dept & Rehabil, Nashville, TN USA
[21] Vanderbilt Univ, Med Ctr, Vanderbilt Sports Concuss Ctr, Nashville, TN USA
[22] Univ Calgary, Dept Clin Neurosci, Fac Med, Dept Family Med, Calgary, AB, Canada
[23] Univ Calgary, Fac Kinesiol, Sport Med Ctr, Calgary, AB, Canada
[24] Florey Inst Neurosci & Mental Hlth, Austin & Cabrini Hosp, Dept Neurosurg, Melbourne, Vic, Australia
[25] Univ Washington, Dept Neurol Surg, Theodore S Roberts Endowed Chair, Seattle, WA 98195 USA
[26] Natl Football League Head Neck & Spine Med Comm, New York, NY USA
[27] Univ N Carolina, Dept Exercise & Sport Sci, Chapel Hill, NC USA
[28] Univ N Carolina, Matthew Gfeller Sport Related Traumat Brain Injur, Chapel Hill, NC USA
[29] Univ Washington, Dept Rehabil Med, Seattle Sports Concuss Program, Seattle Seahawks, Seattle, WA 98195 USA
[30] Univ Washington, Dept Orthopaed & Sports Med, Seattle Sports Concuss Program, Seattle Seahawks, Seattle, WA 98195 USA
[31] Univ Washington, Dept Neurol Surg, Seattle Sports Concuss Program, Seattle Seahawks, Seattle, WA 98195 USA
[32] Univ Washington, Seattle Mariners, Seattle, WA 98195 USA
[33] Univ British Columbia, Neuropsychol Outcome Assessment Lab, Vancouver, BC V5Z 1M9, Canada
[34] Univ British Columbia, Dept Psychiat, Vancouver, BC V5Z 1M9, Canada
[35] Cornell Univ, Weill Med Coll, Dept Clin Neurol, New York, NY 10021 USA
[36] Burke Rehabil Hosp, White Plains, NY USA
[37] New York State Athlet Commiss, New York, NY USA
[38] Univ Ottawa, Canadian Natl Mens Sledge Hockey Team, Ottawa Sport Med Ctr, Dept Family Med, Ottawa, ON, Canada
[39] Med Coll Wisconsin, Dept Neurosurg, Madison, WI USA
[40] Med Coll Wisconsin, Dept Neurol, Madison, WI USA
[41] Monash Univ, Australian Ctr Res Injury Sports & Its Prevent, Monash Injury Res Inst, Clayton, Vic 3800, Australia
[42] Univ New S Wales, Fac Sci, Sydney, NSW, Australia
[43] McIntosh Consultancy & Res Pty Ltd, Sydney, NSW, Australia
[44] Florey Inst Neurosci & Mental Hlth, Melbourne, Vic, Australia
[45] Univ Melbourne, Melbourne Physiotherapy Dept, Ctr Hlth Exercise & Sports Med, Melbourne, Vic 3010, Australia
[46] McMaster Univ, Dept Pediat, Hamilton, ON, Canada
[47] McMaster Univ, David Braley Sport Med & Rehabil Ctr, Hamilton, ON, Canada
[48] Princeton Univ, Princeton, NJ 08544 USA
[49] Univ Med & Dent New Jersey, Robert Wood Johnson Med Sch, New Brunswick, NJ USA
[50] Univ Calgary, Fac Kinesiol, Sport Injury Prevent Res Ctr, Calgary, AB, Canada