1. Division of Hematology and Blood Coagulation Department of Internal Medicine I Medical University of Vienna Vienna Austria
2. Department of Internal Medicine I Elisabethinen Hospital Linz Linz Austria
3. Division of Hematology and Oncology Innsbruck Medical University Innsbruck Austria
4. Department of Hematology Medical University of Graz Graz Austria
5. Department of Internal Medicine 3 Hanusch Hospital Vienna Austria
6. Department of Applied Systems Research and Statistics Johannes Kepler University Linz Austria
7. Department of Internal Medicine 2 Donauspital Vienna Austria