1. From the Investigations Préventives et Cliniques (A.B., A.R., L.G.), Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM) U337 (A.B., M.S.) and U258 (J.-L.R., P.D., L.G.), Paris, France; and Department of Medicine (H.S.), State University of New York, Syracuse, NY.