Weiler R, Blauwet C, Clarke D, Correspondence to Professor Evert Verhagen, Department of Public and Occupational Health, Amsterdam UMC, Amsterdam, Noord Holland, The Netherlands Abstract Concussion is a frequent injury in many sports and is also common in para athletes. However, there is a paucity of concussion research related to para sport, and prior International Concussion in Sport (CIS) consensus papers have not substantively addressed this …