1. From Instituto Nacional de Salud (M.L.O., M.G., M.M., A.J.R, A.R., L.P., G.A., S.G., F.P., O.P.), Bogota, Colombia; and the Centers for Disease Control and Prevention (V.T.T., D.V., S.M.G., S.C.T., C.M.W., J.D.T., J.M.V., D.M.D., M.A.H.) and the Department of Gynecology and Obstetrics, Emory University School of Medicine (D.J.J.), Atlanta.