1. Rhode Island Hospital, Providence, RI, USA
2. Alpert Medical School of Brown University, Providence, RI, USA
3. Purdue University, West Lafayette, IN, USA
4. Womack Army Medical Center, Fort Bragg, NC, USA
5. San Francisco VA Health Care System, CA, USA
6. University of California, San Francisco, USA
7. Brown University School of Public Health, Providence, RI, USA
8. University of South Carolina, Columbia, USA
9. Independent Researcher and Practitioner, Mount Shasta, CA, USA