[1] Royal Liverpool & Broadgreen Univ Teaching Hosp N, Liverpool, Merseyside, England
[2] Univ Coll London Hosp NHS Fdn Trust, London, England
[3] Hull & East Yorkshire Hosp NHS Trust, Kingston Upon Hull, N Humberside, England
[4] Wellcome Trust Sanger Inst, Cambridge, England
[5] Univ Southampton, Fac Med, Southampton, Hants, England
[6] Southampton Univ Hosp, Dept Haematol, Southampton, Hants, England
[7] Heart England NHS Fdn Trust, Birmingham, W Midlands, England
[8] Guys & St Thomas NHS Fdn Trust, London, England
[9] Cardiff Univ, Div Canc & Genet, Sch Med, Cardiff, S Glam, Wales
[10] Kings Coll Hosp NHS Fdn Trust, London, England
[11] Univ Oxford, Weatherall Inst Mol Med, MRC Mol Haematol Unit, Oxford, England
[12] NIHR Oxford Biomed Ctr, BRC Blood Theme, Oxford, England
[13] Imperial Coll London, St Marys Hosp, London, England