It is time to give concussion an operational definition: a 3-step process to diagnose (or rule out) concussion within 48 h of injury: World Rugby guideline: Table 1

Martin Raftery, Simon Kemp, Jon Patricios, Michael Makdissi, Philippe Decq
2016 British Journal of Sports Medicine  
doi:10.1136/bjsports-2016-095959 pmid:26941277 fatcat:mzg2omip45fcrgttwduksx2jee