[1] Freeline, Stevenage, Herts, England
[2] Royal Free NHS Fdn Trust, Katharine Dormandy Haemophilia Ctr, London, England
[3] Royal Free NHS Fdn Trust, Thrombosis Unit, London, England
[4] UCL, Canc Inst, Dept Haematol, London, England
[5] UCL Canc Inst, Dept Haematol, London, England
[6] Royal Free Hosp, KD Haemophilia & Thrombosis Ctr, London, England
[7] UCL, UCL Canc Inst, London, England
[8] KD Haemophilia & Thrombosis Ctr, London, England
[9] St Jude Childrens Res Hosp, Dept Surg, 332 N Lauderdale St, Memphis, TN 38105 USA
[10] St Jude Childrens Res Hosp, Childrens GMP LLC, 332 N Lauderdale St, Memphis, TN 38105 USA
[11] St Jude Childrens Rsch Hosp, Dept Surg, Memphis, TN USA
[12] St Jude Childrens Res Hosp, 332 N Lauderdale St, Memphis, TN 38105 USA