Mart Kals, Lindsay Wilson, Daniel F Levey, Livia Parodi, Ewout W Steyerberg , Sylvia Richardson, Feng He, Xiaoying Sun, Sonia Jain, Aarno Palotie, Samuli Ripatti, Jonathan Rosand, Geoff T Manley, Andrew I R Maas, Murray B Stein, David K Menon; Genetic Associations In Neurotrauma (GAIN) Consortium (with contribution from the CENTER-TBI and TRACK-TBI studies).