1. Brown University School of Public Health, Providence, Rhode Island (P.M.)
2. VA Pittsburgh Healthcare System, Pittsburgh, Pennsylvania (X.Z., F.E.S., J.P.C., J.A.H.)
3. VA Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, and University of North Carolina Eshelman School of Pharmacy, Chapel Hill, North Carolina (C.T.T., J.M.T.)
4. VA Pittsburgh Healthcare System and University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania (M.K.M., J.M.D.)
5. VA Pittsburgh Healthcare System and University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania (T.R.R., L.R.H., M.J.F.)
6. University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania; VA Pittsburgh Healthcare System and University of Pittsburgh, Pittsburgh, Pennsylvania (J.T.H.)
7. VA Pittsburgh Healthcare System, University of Pittsburgh School of Medicine, and UPMC Health Plan, Pittsburgh, Pennsylvania (C.B.G.)
8. VA Pittsburgh Healthcare System, and University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania (W.F.G.)