1. INSERM UMR1163 Université Paris Descartes-Sorbonne Paris Cité, Institut Imagine, Hôpital Necker Enfants Malades, Paris, France
2. Department of Orthopaedic Surgery University of California, San Francisco, San Francisco General Hospital, Orthopaedic Trauma Institute, San Francisco, California, USA
3. INSERM, U955, IMRB, UPEC, Créteil, Paris, France