Consensus statement on Concussion in Sport – The 4th International Conference on Concussion in Sport held in Zurich, November 2012 - McCrory, P; Meeuwisse, W; Aubry, M; Cantu, B; Dvorak, J; Echemendia, R; Engebretsen, L; Johnston, K; Kutcher, J; Raftery, M; Sills, A; Benson, B; Davis, G; Ellenbogen, R; Guskiewicz, K; Herring, S A; Iverson, G; Jordan, B; Kissick, J; McCrea, M; McIntosh, A; Maddocks, D; Makdissi, M; Purcell, L; Putukian, M; Schneider, K; Tator, C; Turner, M (Phys Ther Sport, 2013)