1. University of WashingtonSeattle, Washington
2. Veterans Affairs Eastern Colorado Health Care SystemDenver, Colorado
3. Colorado School of Public HealthDenver, Colorado
4. Providence Veterans Affairs Medical CenterProvidence, Rhode Island
5. Alpert Medical School of Brown UniversityProvidence, Rhode Island
6. Veterans Affairs Boston Healthcare SystemBoston, Massachusetts
7. Brigham and Women’s HospitalBoston, Massachusetts
8. Harvard Medical SchoolBoston, Massachusetts
9. University of UtahSalt Lake City, Utah
10. Medical University of South CarolinaCharleston, South Carolina
11. Stanford UniversityStanford, California
12. Richard L. Roudebush Veterans Affairs Medical CenterIndianapolis, Indianaand
13. Indiana University School of MedicineIndianapolis, Indiana