[1] San Bortolo Hosp, Dept Hematol, I-36100 Vicenza, Italy
[2] Osped Regina Apostolorum, Dept Med Sci, Albano Laziale, Italy
[3] Univ Washington, Sch Med, Puget Sound Blood Ctr, Seattle, WA USA
[4] Univ Paris 12, Hop Henri Mondor, AP HP, Fac Med,Serv Med Interne, F-94010 Creteil, France
[5] Barts & London Queen Marys Sch Med & Dent, Dept Haematol, London, England
[6] McMaster Univ, Dept Med, Michael G DeGroote Sch Med, Hamilton, ON, Canada
[7] Cornell Univ, Weill Cornel Med Coll, New York, NY 10021 USA
[8] Univ Penn, Sch Med, Dept Pathol & Lab Med, Philadelphia, PA 19104 USA
[9] Univ New S Wales, Dept Hematol, St George Hosp, S Eastern Area Lab Serv, Sydney, NSW, Australia
[10] Univ New S Wales, Dept Med, St George Clin Sch, Sydney, NSW, Australia
[11] Inst Child Hlth, Mol Immunol Unit, London, England
[12] Med Univ Vienna, Div Haematol & Haemostaseol, Dept Internal Med 1, Vienna, Austria
[13] Univ Roma La Sapienza, Dept Cellular Biotechnol & Hematol, Rome, Italy
[14] Scripps Res Inst, La Jolla, CA USA
[15] Hosp Univ La Fe, Hematol Serv, Valencia, Spain
[16] Univ Basel, Childrens Hosp, Basel, Switzerland
[17] Univ Toronto, Hosp Sick Children, Dept Pediat, Div Hematol Oncol, Toronto, ON M5G 1X8, Canada
[18] Univ Oklahoma Hlth Sci Ctr, Coll Publ Hlth, Dept Biostat & Epidemiol, Hematol Oncol Sect,Coll Med, Oklahoma City, OK USA