1. Service de Médecine InterneCHU Henri Mondor AP-HP, Université Paris, Créteil, France
2. Department of HematologyErasmus Medical Center, Rotterdam, The Netherlands
3. Department of HematologyUniversity Hospitals Leuven, Belgium
4. Department of Internal MedicineMedical University of Vienna, Austria
5. Department of HaematologyUniversity Hospital La Fe, Valencia, Spain
6. Amgen (Europe) GmbHZug, Switzerland
7. Amgen Inc.Thousand Oaks, CA, USA