1. Boston University School of Public Health, Boston, Massachusetts.
2. VA Boston Healthcare System, Boston, Massachusetts.
3. Department of Interdisciplinary Health Sciences, College of Allied Health Sciences, Augusta University, Augusta, Georgia.
4. Uniformed Services University Graduate School of Nursing, Bethesda, Maryland.
5. Henry M. Jackson Foundation at the Uniformed Services University Graduate School of Nursing, Bethesda, Maryland.
6. Miami VA Healthcare System, Miami, Florida.
7. Institute for Neuro-Immune Medicine, Dr. Kiran C. Patel College of Osteopathic Medicine, Nova Southeastern University, Fort Lauderdale, Florida.
8. Department of Population Health Sciences, Medical College of Georgia, Augusta University, Augusta, Georgia.
9. Research Service, Charlie Norwood Veterans Administration Medical Center, Augusta, Georgia.