1. Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), CNRS (UMR 7104), Inserm U964, Université de Strasbourg, Illkirch Graffenstaden 67400, France
2. Department of Pathology, Brigham and Women's Hospital, Boston, MA 02115, USA
3. Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
4. Harvard Stem Cell Institute, Boston, MA 02115, USA
5. Anagenesis Biotechnologies, Parc d'innovation, Illkirch Graffenstaden 67400, France
6. Department of Developmental and Stem Cell Biology, Institut Pasteur, Paris 75015, France
7. CNRS UMR 3738, Institut Pasteur, Paris 75015, France