1. The Sanford and Joan Weill College of Medicine of Cornell University, New York, USA; Spine Service and Mineralized Tissue Group, The Hospital for Special Surgery, New York, USA; Mineralized Tissue Group, The Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021, USA
2. Spine Service and Mineralized Tissue Group, The Hospital for Special Surgery, New York, USA
3. The Sanford and Joan Weill College of Medicine of Cornell University, New York, USA; Division of Clinical Genetics, Cornell University, New York, USA