1. Department of Lymphoid Malignancies, Maria Skłodowska-Curie Institute – Oncology Center, Warszawa, Poland;
2. Clinical Hospital Coltea, Bucharest, Romania;
3. Department for Hematology and Transplantology, University Clinical Centre, Medical University of Gdansk, Gdansk, Poland;
4. Department of Internal Medicine, Hematology and Oncology, University Hospital Brno, Brno, Czech Republic;
5. 4SC AG, Martinsried, Planegg, Germany