Westpfalz Hospital, Westpfalz Hospital - Department of Internal Medicine 1, University of Leipzig, Heidelberg University, University of Oslo - Oslo University Hospital, Saarland University - Department of Internal Medicine 1, University of Cologne - University Hospital of Cologne, University Hospital Ulm, University of Tübingen - University Hospitals Tübingen, Rechts der Isar Hospital, Munich University Hospital, University of Göttingen, Hospital Motherhouse of the Borromäerinnen, University of Freiburg - Medical Center, Klinikum-Fulda gAG, University of Oldenburg, University of Hamburg - University Medical Center Hamburg-Eppendorf, Dr. Horst-Schmidt-Klinik, Küchwald Hospital Chemnitz, University Hospital Marburg, Schleswig-Holstein University - University Hospital Center, Hematology AUSL-IRCCS Reggio Emilia, Hematology ASST Spedali Civili Brescia, University of Copenhagen - Rigshospitalet, Università degli studi di Modena e Reggio Emilia (UNIMORE), University Hospital Mannheim, Sapienza University of Rome, Evang. Diakonie-Krankenhaus, University of Wuerzburg - Institute of Pathology, Saarland University - Medical School, University Hospital of North Norway, Tel Aviv University - Rabin Medical Center, Saarland University - Department of Internal Medicine 1, Saarland University - Department of Internal Medicine 1, Saarland University - Department of Internal Medicine 1, Saarland University - Department of Internal Medicine 1, Saarland University - Department of Internal Medicine 1, Asklepios Klinik St. Georg, University of Leipzig, University of Leipzig, Saarland University - Department of Internal Medicine 1 and Independent