1. VA Nebraska‐Western Iowa Health Care System and University of Nebraska Medical Center Omaha
2. VA Nebraska‐Western Iowa Health Care System and University of Nebraska Medical Center, Omaha, and University of Nebraska at Lincoln Lincoln
3. Philadelphia VA Medical Center and University of Pennsylvania Philadelphia
4. VA Salt Lake City Health Care System and University of Utah Salt Lake City
5. Birmingham VA Medical Center and University of Alabama at Birmingham Birmingham
6. Washington, DC VA Medical Center Georgetown University, and Howard University Washington DC
7. Dallas VA Medical Center and University of Texas Southwestern Dallas
8. VA Portland Healthcare System and Oregon Health and Science University Portland
9. University of Washington Seattle
10. VA Pittsburgh Health Care and University of Pittsburgh Pittsburg Pennsylvania