1. Department of Anesthesiology, Perioperative & Pain Medicine, Harvard Medical School, Brigham & Women's Hospital, Boston, MA, United States
2. RAM Group, Department of Electrical Engineering, Mathematics, and Computer Science, University of Twente, the Netherlands
3. Football Players Health Study at Harvard University, Harvard Medical School, Boston, MA, United States
4. Department of Clinical Psychology, Nova Southeastern University, Fort Lauderdale, FL, United States
5. Department of Psychiatry & Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, United States
6. Department of Environmental Health, Harvard TH Chan School of Public Health, Boston, MA, United States
7. Cardiovascular Performance Program, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
8. Department of Cardiology, Lausanne University Hospital (CHUV) and Institute for Sport Science, University of Lausanne (ISSUL), Lausanne, Switzerland
9. Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Charlestown, MA, United States
10. Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States
11. Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States