1. Department of Clinical Haematology, Oxford University Hospitals, Oxford, UK
2. NIHR, BRC Blood Theme, Oxford, UK
3. Haematology Department, Larissa University Hospital, Larissa, Greece
4. Haematology Department, University Hospitals Birmingham NHS Foundation Trust, Birmingham
5. Department of Immunology, Oxford University Hospitals, Oxford
6. Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK