1. Wolfson Institute of Population Health, Queen Mary University of London, London, United Kingdom
2. Barts Health NHS Trust, London, United Kingdom
3. Department of Medicine, Massachusetts General Hospital, Boston
4. Blizard Institute, Queen Mary University of London, London, United Kingdom
5. NHS Blood and Transplant, London, United Kingdom
6. Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
7. Center for Bioethics, Harvard Medical School, Boston, Massachusetts
8. Department of Medicine, Boston University School of Medicine, Boston, Massachusetts