1Department of Orofacial Sciences and Department of Anatomy, Program in Craniofacial Biology, Institute of Human Genetics, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California San Francisco, San Francisco, CA, USA
2INSERM, Unit 1132 of Bone and Cartilage Biology, University of Paris, Hôpital Lariboisiere, Paris, France