[1] Cent Manchester NHS Fdn Trust, Dept Haematol, Manchester, Lancs, England
[2] Royal Manchester Childrens Hosp, Manchester M27 1HA, Lancs, England
[3] Kings Coll Hosp London, Paediat Liver Serv, London, England
[4] Kings Coll Hosp London, Inst Liver Studies, London, England
[5] Kings Coll Hosp London, Dept Radiol, London, England
[6] Kings Coll Hosp London, Dept Histopathol, London, England
[7] Kings Coll Hosp London, Dept Haematol Med, London, England
[8] Great Ormond St Hosp Sick Children, Dept Bone Marrow Transplantat, London, England
[9] Royal Marsden NHS Fdn Trust, Sect Haematooncol, London, England