MacCallum Peter, Bowles Louise, Keeling David
Wolfson Institute of Preventive Medicine, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, UK Department of Haematology, Barts Health NHS Trust, London, UK
Department of Haematology, Barts Health NHS Trust, London, UK.
BMJ. 2014 Jul 17;349:g4387. doi: 10.1136/bmj.g4387.