[1] Univ Goettingen, Gottingen, Germany
[2] Univ Duesseldorf, Dusseldorf, Germany
[3] Hanusch Hosp, L Boltzmann Inst Leukemia Res & Hematol, Vienna, Austria
[4] Univ Freiburg, D-7800 Freiburg, Germany
[5] Johannesburg Hosp, Duisburg, Germany
[6] Univ Munich, Inst Biostat, D-80539 Munich, Germany
[7] Med Univ, Vienna, Austria
[8] Univ Vienna, Inst Human Genet, Vienna, Austria