1. From the Universidade Federal da Bahia, Salvador, Brazil (R.B., F.S.B., E.M.C., D.P.-S., A.B., J.S.C., M.B.-N., L.S., J.C.B., R.T., H.R.); the Institut Curie, Paris (E.F., R.F.); Cornell University Medical College, New York (R.B., J.L.H., W.D.J.); and Roussel–UCLAF, Romainville, France (M.B.). Address reprint requests to Dr. Roberto Badaro at Cornell University Medical College, Division of International Medicine, 1300 York Ave., New York, NY 10021.