1. Department of Family Medicine, Uniformed Services University of the Health Sciences , Bethesda, MD 20814, USA
2. Office for Student Affairs, Uniformed Services University of the Health Sciences , Bethesda, MD 20814, USA
3. Center for Health Professions Education, Uniformed Services University of the Health Sciences , Bethesda, MD 20814, USA
4. Defense and Veterans Center for Integrative Pain Management, Department of Anesthesiology, Uniformed Services University , Bethesda, MD 20814, USA
5. Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. , Bethesda, MD 20817, USA
6. Department of Medicine, Uniformed Services University of the Health Sciences , Bethesda, MD 20814, USA
7. Department of Military and Emergency Medicine, Uniformed Services University of the Health Sciences , Bethesda, MD 20814, USA
8. Department of Health, Human Function, and Rehabilitation Science, School of Medicine and Health Sciences, George Washington University , Washington, DC 20037, USA