1. Orthopaedic Research Laboratory; Royal Victoria Hospital; McGill University; Montréal Canada
2. Orthopaedic Research Laboratory; Lady Davis Institute for Medical Research, Jewish General Hospital; Montréal Canada
3. McGill Scoliosis and Spine Center; McGill University; Montréal Canada
4. Department of Surgery; McGill University; Montréal Canada
5. Department of Clinical Sciences; Section for Rheumatology; Molecular Skeletal Biology; Lund University; Lund Sweden
6. Shriners Hospital for Children; Montréal Canada