1. Sarver Heart Center (S.G.), University of Arizona, Tucson
2. Hines VA Pharmacy Benefits Management, IL (M.M.).
3. University of Arizona, Tucson (G.K.S.).
4. University of Alabama, Birmingham VA Medical Center (W.H.).
5. Department of Thoracic and Cardiovascular Surgery, Cleveland Clinic, OH (F.G.B.).
6. VA Health Economics Resource Center, Palo Alto VA, CA (T.H.W.).
7. Department of Surgery, Stanford University, Palo Alto, CA (T.H.W.).