[1] Univ Calgary, Foothills Hosp, Calgary, AB T2N 1N4, Canada
[2] Duke Univ, Med Ctr, Durham, NC 27706 USA
[3] Universitatsklinikum Carl Gustav Carus, Med Klin & Poliklin 3, Dresden, Germany
[4] Washington Univ, Sch Med, St Louis, MO 63130 USA
[5] Hosp Germans Trias & Pujol, Barcelona, Spain
[6] Serv Hematol Biol, Paris, France
[7] McMaster Univ, HHSC McMaster Clin, Hamilton, ON L8S 4L8, Canada
[8] Aventis Pharma, Bridgewater, NJ USA