1. Department of Statistics; The European Organisation for Research and Treatment of Cancer (EORTC); Brussels Belgium
2. Netherlands Comprehensive Cancer Organisation (IKNL); Utrecht the Netherlands
3. Division of Psychosocial Research and Epidemiology; the Netherlands Cancer Institute (NKI); Amsterdam the Netherlands
4. Department of Radiation Oncology; the Netherlands Cancer Institute (NKI); Amsterdam the Netherlands
5. Department of Hematology; Erasmus MC Cancer Institute; Rotterdam the Netherlands
6. Department of Radiation Oncology; ZNA Middelheim and University of Antwerp; Antwerp Belgium
7. Department of Haematology; Rigshospitalet Copenhagen University Hospital; Copenhagen Denmark