1. From the Department of Medicine (B.M.E., S.R.S., C.S.W., Y.Z.), Medical University of South Carolina, Charleston, SC; Division of Biostatistics (D.B.), School of Public Health, University of Minnesota, Minneapolis, MN; Health Economics and Outcomes Research (K.S.Y.-I.), Novartis Pharmaceuticals Corporation, East Hanover, NJ. Dr Yu-Isenberg's current affiliation is GlaxoSmith-Kline, Research Triangle Park, NC.