Affiliation: | 1. Imperial College London, UK;2. Leeds University, UK;3. St George’s Hospital,UK;4. Academic Surgical Unit, Imperial College London, UK;1. Clinique Arago, 93, boulevard Arago, 75014 Paris, France;2. Service de chirurgie orthopédique, hôpital Necker, 149, rue de Sèvres, 75015 Paris, France;3. Département de pédiatrie, institut Gustave-Roussy, 94805 Villejuif cedex, France;4. Service d’anatomopathologie, institut universitaire du cancer de Toulouse oncopole, Toulouse, France;5. Service de radiologie pédiatrique, hôpital Necker–Enfants-Malades, 149, rue de Sèvres, 75015 Paris, France;1. Department of Pathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts;2. Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts |