[1] Univ Texas, SW Med Ctr, Dept Hematol & Stem Cell Transplantat, Dallas, TX 75235 USA
[2] Univ Texas, MD Anderson Canc Ctr, Dept Leukemia, Houston, TX 77030 USA
[3] Univ Southampton, Wessex Reg Genet Lab, Salisbury, Wilts, England
[4] Univ Michigan Hlth Syst, Dept Internal Med, Ann Arbor, MI USA
[5] Austrian Acad Sci, Ctr Mol Med, A-1010 Vienna, Austria
[6] Hammersmith Hosp, Dept Haematol, Imperial Coll, London, England
[7] Temple Univ, Dept Microbiol & Immunol, Philadelphia, PA 19122 USA
[8] Cornell Univ, Weill Med Coll, Presbyterian Hosp, New York, NY USA