1. Department of Haemato-Oncology, Royal Marsden Hospital, Institute of Cancer Research, London, United Kingdom;
2. Institute of Immunology, Center for Pathophysiology Infectiology, and Immunology, Medical University of Vienna, Vienna, Austria;
3. Department of Haematology, Erasmus MC, Rotterdam, The Netherlands;
4. St Anna Children's Hospital, Vienna, Austria;
5. Medical Department III, Hanusch Hospital, Vienna, Austria;
6. Department of Statistics, Royal Marsden Hospital, Institute of Cancer Research, London, United Kingdom;
7. Immunology, Centre Hospitalier Universitaire (CHU) and Faculty of Medicine, Nancy University, Nancy, France;
8. Department of Pathology, Karolinska University Hospital and Karolinska Institute, Stockholm, Sweden;
9. Department of Medicine and Cytometry Service, Cancer Research Center (IBMCC-USAL/CSIC), University of Salamanca, Salamanca, Spain;
10. Department of Hematology-Transfusiology, Hospital Jihlava, Jihlava, Czech Republic; and
11. Department of Hematology, Oncology, and Tumor Immunology, HELIOS Clinic Berlin Buch, Berlin, Germany