[1] Canc Res UK Clin Trials Unit, Birmingham, W Midlands, England
[2] Queen Elizabeth Hosp, Birmingham, W Midlands, England
[3] Royal Free Hosp, Dept Clin Immunol, London, England
[4] UCL, Inst Immun & Transplantat, Royal Free Campus, London, England
[5] Nottingham Univ Hosp NHS Trust, Nottingham, England
[6] NHS Blood & Transplant, Transfus Med, Oxford, England
[7] Oxford Univ Hosp NHS Fdn Trust, Dept Haematol, Oxford, England
[8] Univ Oxford, Radcliffe Dept Med, Oxford, England
[9] NIHR Oxford Biomed Res Ctr, Oxford, England
[10] Univ Coll London Hosp, London, England