1. James A. Haley Veterans’ Hospital, Tampa, Florida, USA
2. University of South Florida Morsani College of Medicine, Tampa, Florida, USA
3. San Francisco VA Health Care System, San Francisco, California, USA
4. University of California, San Francisco, California, USA
5. New Mexico VA Health Care System, Albuquerque, New Mexico, USA
6. VA Puget Sound Health Care System, Tacoma, Washington, USA
7. VA Northeast Ohio Healthcare System, Cleveland, Ohio, USA