1. From the Department of Biological Hematology, Hôpital Bicêtre, Le Kremlin-Bicêtre, France; the Platelet Immunology Department, INTS, Paris, France; the Biological Immunology and Hematology Department, Hôpital Tenon, Paris, France; the Biological Hematology Department, Hôpital R. Debré, Paris, France; and the Department of Public Health, Hôpital H. Mondor, Créteil, France.