1. Department of Clinical Genetics, Medical Centre of Human Genetics, Philipps University, Marburg,
2. Robert Rössle Hospital, Max Delbrück Centre for Molecular Medicine, Humboldt University, Berlin,
3. Department of Internal Medicine II, University of Kiel,
4. Department of Haematology and Oncology, Klinikum Benjamin Franklin, Free University, Berlin,
5. Institute of Human Genetics, University of Heidelberg,
6. Department of Haematology, Internal Medicine, University of Frankfurt, Germany,
7. Institute for Medical Biology, University of Vienna, Austria