1Psychiatry Neuroimaging Laboratory, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
2Department of Neuroradiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
3TUM-Neuroimaging Center, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
4Department of Neurosurgery, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
5Elliott Sports Medicine Clinic, Burlington, ON, Canada
6Department of Child and Adolescent Psychiatry, Psychosomatic and Psychotherapy, Ludwig-Maximilians-Universität, Munich, Germany
7Translational Research Center, University Hospital of Psychiatry, Bern, Switzerland
8Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
9Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA
10Boston University Alzheimer's Disease and CTE Center, Boston University School of Medicine, Boston, MA, USA
11Department of Radiology, Charité Universitätsmedizin, Berlin, Germany
12Department of Neurology, Epilepsy Center, Ludwig-Maximilians-Universität, Munich, Germany
133M Centre, The University of Western Ontario, London, ON, Canada
14School of Health Studies, The University of Western Ontario, London, ON, Canada
15Ruth Lilly Medical Library, Indiana University, Indianapolis, IN, USA
16School of Psychology, University of Ottawa, Ottawa, ON, Canada
17Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
18Center for Clinical Spectroscopy, Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
19VA Boston Healthcare System, Brockton Division, Brockton, MA, USA