1. Western University of Health Sciences, VA Greater Los Angeles Healthcare System, Los Angeles, CA, USA
2. Institute for Clinical Evaluative Sciences, University of Toronto, University Health Network, Toronto, Ontario, Canada
3. University of Colorado Anschutz Medical Campus, Aurora, CO, USA
4. Brigham and Women’s Hospital, Boston, MA, USA
5. New York–Presbyterian Columbia University Medical Center, New York, NY, USA
6. Medical University of South Carolina, Charleston, SC, USA
7. University of Missouri Kansas City, Kansas City, MO, USA