1. From the Hospital Duran i Reynals, Barcelona; Hospital Germans Trias i Pujol, Badalona; Hospital Miguel Servet, Zaragoza; Hospital Arnau de Vilanova, Valencia; Hospital General de Alicante, Alicante; Hospital General de Elche, Elche; Hospital Universitario Reina Sofia, Cordoba; Hospital Infanta Cristina, Badajoz; Hospital 12 de Octubre, Madrid; Hospital La Fe, Valencia; Hospital del Mar, Barcelona; Hospital Clínico, Madrid, Spain; and Lilly Research Laboratories, Indianapolis, IN.