1. From the Center for Global Health and Diseases, Case Western Reserve University School of Medicine (C.L.K., Y.-C.C., B.M., J.W.K.), and the Veterans Affairs Medical Center (C.L.K.), Cleveland; Papua New Guinea Institute of Medical Research, Goroka (J.S., N.S., S.S., L.J.R., P.M.S.); and the Division of Biostatistics (C.W.G.) and Department of Medicine, Infectious Diseases Division (G.J.W.), Washington University School of Medicine, St. Louis.