1. Department of Haematology, Royal North Shore Hospital, St. Leonards, Australia;
2. Department of Haematology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK;
3. Department of Oncology-Hematology, University of Milan and Azienda Ospedaliera Papa Giovanni XXIII, Bergamo, Italy;
4. Department of Clinical Haematology, Peter MacCallum Cancer Centre and The Royal Melbourne Hospital, Melbourne, Australia;
5. Department of Hematology, UZ Leuven, University Hospitals Leuven, Leuven, Belgium;
6. Department of Paediatric Haemato-Oncology, Royal Marsden NHS Foundation Trust, London, UK;
7. Global Biostatistical Science, Amgen Inc, Thousand Oaks, CA, USA;
8. Global Development, Amgen Inc, Thousand Oaks, CA, USA