[1] Univ Naples Federico II, Dept Biochem & Med Biotechnol, I-80131 Naples, Italy
[2] Univ Roma La Sapienza, Dept Cellular Biotechnol & Haematol, Rome, Italy
[3] Russian Acad Med Sci, Inst Clin Immunol, Siberian Branch, Novosibirsk, Russia
[4] CHU Henri Mondor, Serv Hematol Clin, F-94010 Creteil, France
[5] Univ Basel Hosp, CH-4031 Basel, Switzerland
[6] Univ Toronto, Princess Margaret Hosp, Dept Med, Toronto, ON, Canada
[7] Osped San Martino Genova, Dept Haematol, Genoa, Italy
[8] Hop St Louis, Serv Hematol Greffe, Paris, France
[9] Univ Hosp, Inst Clin Transfus Med & Immunogenet, Inst Transfus Med, Ulm, Germany
[10] Kings Coll Hosp London, Dept Haematol Med, London, England
[11] Univ Hosp Geneva, Serv Hematol, Dept Med Interne, Geneva, Switzerland