1. From Jiangsu Province Hospital, First Affiliated Hospital of Nanjing Medical University (D.Y., J.N.Z.), Nanjing, Peoples Republic of China; Pharmacologie et Physico-Chimie, Université Louis Pasteur de Strasbourg (D.Y.), Illkirch, France; Institut de Recherches Servier (M.F., N.L.), Suresnes, France; and Institut de Recherches Internationales Servier (P.M.V.), Courbevoie Cedex, France.