1. bluebird bio, Cambridge, Massachusetts.
2. CEA, Institute of Emerging Disease and Innovative Therapies (iMETI), Fontenay aux Roses, France.
3. UMR 007, University of Paris 11 and CEA, CEA-iMETI, Fontenay aux Roses, France.
4. Necker Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France.
5. Mahidol University, Bangkok, Thailand.
6. Immunology Laboratory, Groupe Hospitalier Universitaire Paris-Sud, Assistance Publique–Hôpitaux de Paris, Paris, France.
7. Harvard Medical School and Genetics Division, Department of Medicine, Brigham & Women's Hospital, Boston, Massachusetts.
8. INSERM, Paris, France.