1. Center for Bioethics and Humanities, University of Colorado Denver Anschutz Medical Campus, Aurora, Colorado, USA.
2. Department of Medicine, Division of General Internal Medicine, University of Colorado School of Medicine, Aurora, Colorado, USA.
3. University of Colorado School of Medicine, Aurora, Colorado, USA.
4. Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, Massachusetts, USA.
5. Chronic Traumatic Encephalopathy Center, Boston University, Boston, Massachusetts, USA.
6. Department of Pediatrics, University of Washington, Seattle, Washington, USA.
7. Center for Child Health, Behavior and Development, Seattle Children’s Research Institute, Seattle, Washington, USA.