1. Berlin School of Mind and Brain (HH, MM, AL, CF), Humboldt-Universität zu Berlin; Departments of Neurology (HH, MM, AL, CF) and Neurosurgery (PV) and of Sports Medicine (BW), Charité Universitätsmedizin, Berlin; Institute of Sports Medicine (CR), University of Paderborn, Germany; and Department of Psychiatry (AL), University of Melbourne, Parkville, Australia.