1. Miami VA Healthcare System, GRECC, University of Miami Miami FL USA
2. Phoenix VA Health Care Center, Department of Medicine Phoenix AZ USA
3. Hines VA Cooperative Studies Program, Coordinating Center, Hines VA Hospital Hines IL USA
4. VA Cooperative Studies Program Clinical Research Pharmacy Coordinating Center, University of New Mexico Albuquerque NM USA
5. VA Center for Practice Management & Outcomes Research, VA Ann Arbor Healthcare System Ann Arbor MI USA