1. From the Consorzio Mario Negri Sud, Santa Maria Imbaro; the Catholic University School of Medicine, and the University of Rome “La Sapienza,” Rome; the Ospedali Riuniti, Bergamo, Italy; the Sahlgrenska Hospital, Göteborg, Sweden; the Department of Hematology and Blood Coagulation, University of Vienna, Austria; the Tel-Aviv Souraski Medical Center, Tel-Aviv, Israel; and the Hospital Universitario S Carlos, Madrid, Spain