1Department of Pathology, College of Physicians and Surgeons of Columbia University, New York, NY, USA
2Regional Bone Center, Helen Hayes Hospital, West Haverstraw, NY, USA
3Department of Medicine, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
5Genetics Unit, Shriners Hospital for Crippled Children and McGill University, Montreal, Canada
8INSERM Unit 1033, Faculte Alexis Carrel, Lyon, France
9Department of Medicine, Harborview Medical Center, University of Washington, Seattle, WA, USA
11University of Arkansas for Medical Sciences, Little Rock, AR, USA