1. Minneapolis VA Section of Infectious Diseases and University of Minnesota School of Medicine, Minneapolis, Minnesota (A.S.K.)
2. Minneapolis VA Evidence Synthesis Program, Center for Care Delivery and Outcomes Research, Minneapolis, Minnesota (R.M., E.J.L., L.L.)
3. Portland VA Health Care System, Portland, Oregon (K.V.)
4. Minneapolis VA Evidence Synthesis Program, Center for Care Delivery and Outcomes Research, and University of Minnesota School of Medicine, Minneapolis, Minnesota (W.D., T.J.W.)