[1] Univ Dusseldorf, Dusseldorf, Germany
[2] Univ Gottingen, Dept Hematol Oncol, Gottingen, Germany
[3] St Johannes Hosp, Duisburg, Germany
[4] CHU Vaudois, CH-1011 Lausanne, Switzerland
[5] Univ Hosp Dresden, Dept Internal Med 1, Dresden, Germany
[6] Univ Ulm, Dept Internal Med 3, D-7900 Ulm, Germany
[7] Inst Human Genet, Dusseldorf, Germany
[8] Med Univ Vienna, Div Haematol & Haemostaseol, Vienna, Austria
[9] Hannover Med Sch, Dept Haematol & Oncol, D-30623 Hannover, Germany
[10] Univ Innsbruck, Dept Internal Med, A-6020 Innsbruck, Austria
[11] Elisabethinen Hosp, Dept Internal Med 1, Linz, Austria
[12] Tech Univ Munich, Klinikum Rechts Isar, Dept Med 3, D-8000 Munich, Germany
[13] Univ Hosp Benjamin Franklin, Dept Hematol, Berlin, Germany