[1] Univ Penn, Perelman Sch Med, Dept Pediat, Philadelphia, PA USA
[2] Childrens Hosp Philadephia, Div Hematol, Philadelphia, PA USA
[3] IRCCS Bambino Gesu Childrens Hosp, Dept Pediat Hematol Oncol, Cell & Gene Therapy, Rome, Italy
[4] UCSF Benioff Childrens Hosp Oakland, Div Hematol, Oakland, CA USA
[5] Univ Coll London Hosp, Dept Haematol, London, England
[6] Mahidol Univ, Ramathibodi Hosp, Bangkok, Thailand
[7] G Papanikolaou Hosp, Hematol HCT Unit, Gene & Cell Therapy Ctr, Thessaloniki, Greece
[8] Heidelberg Univ, Mol Med Partnership Unit MMPU, European Mol Biol Lab EMBL, Heidelberg, Germany
[9] Heidelberg Univ, Dept Pediat Oncol Hematol & Immunol, Heidelberg, Germany
[10] Hannover Med Sch, Dept Hematol & Oncol, Hannover, Germany
[11] UCL Great Ormond St Inst Child Hlth, London, England
[12] Hop La Timone, Pediat Hematol, Marseille, France
[13] Bluebird Bio Inc, Cambridge, MA USA
[14] Ann Robert H Lurie Childrens Hosp Chicago, Hematol Sect, Chicago, IL USA
[15] Northwestern Univ, Dept Pediat Hematol Oncol & Stem Cell Transplant, Feinberg Sch Med, Chicago, IL USA