From the Department of Medicine
Indiana University School of Medicine (W.T.A., L.J.B., L.Z., J.F.R., M.A.W., C.G., J.H.P.), and the VA Medical Center (M.A.W., C.G., J.H.P.), Indianapolis, Ind; and the Department of Internal Medicine, University of Iowa College of Medicine (P.M.S.), Iowa City, Iowa.