1. Department of Hematology and Oncology Medical Center Otto‐von‐Guericke University Magdeburg Magdeburg Germany
2. Department of Laboratory Medicine and Pathology Mayo Clinic Rochester Minnesota USA
3. Division of Hematology Department of Medicine Mayo Clinic Rochester Minnesota USA
4. Department of Hematology ASST Spedali Civili di Brescia Brescia Italy
5. Department of Hematology and Oncology University Hospital of Schleswig‐Holstein Luebeck Germany
6. Department of Hematology and Bone Marrow Transplantation National and Kapodistrian University of Athens Laikon General Hospital Athens Greece