1. Medical College of Georgia; Georgia Regents University; Augusta Georgia
2. Duke University Medical Center; Durham North Carolina
3. Durham Veterans Affairs Medical Center; Durham North Carolina
4. Johns Hopkins Hospital; Baltimore Maryland
5. Augusta Veterans Affairs Medical Center; Augusta Georgia
6. West Los Angeles Veterans Affairs Medical Center; West Los Angeles California
7. University of California Los Angeles School of Medicine; Los Angeles California
8. University of California San Francisco; San Francisco California
9. San Francisco Veterans Affairs Medical Center; San Francisco California
10. Oregon Health & Sciences University; Portland Oregon
11. University of California San Diego; San Diego California
12. San Diego Veterans Affairs Medical Center; San Diego California