Affiliation: | (1) Department of Pediatric Radiology, Hôpital Trousseau, Paris, France;(2) Department of Pediatric Orthopedic Surgery, Hôpital Trousseau, Paris, France;(3) Service de Radiologie Pédiatrique, Hôpital Trousseau, 26 avenue du Docteur A. Netter, F-75012 Paris, France;(4) Present address: Department of Radiology, Montreal Children's Hospital, 2300 Tupper Street, H3H 1P3 Montreal, Quebec, Canada |