1. Shriners Hospital for Children (M.C., L.-N.V., P.R., F.H.G., F.R.) and Department of Pediatrics, McGill University, Montreal, Quebec, Canada H3G 1A6;
2. Ludwig Boltzmann Institute of Osteology (P.R., K.K.) at the Hanusch Hospital of Wiener Gebietskrankenkasse and Allgemeine Unfallversicherungsanstalt, Trauma Centre Meidling, First Medical Department Hanusch Hospital, Vienna, Austria A-1140