1. Skeletal Dysplasia Group, Medical Genetics Department, Medical Sciences Faculty State University of Campinas (UNICAMP) Campinas São Paulo Brazil
2. Growth and Development Department Garrahan Hospital Buenos Aires Argentina
3. Study Group of Genetic Skeletal Abnormalities, Genetic Unit, Pediatrics Division, Faculty of Medicine Pontificia Universidad Católica de Chile Santiago Chile
4. Genetic Department Garrahan Hospital Buenos Aires Argentina
5. Study Group of Genetic Skeletal Abnormalities, Department of Radiology, Faculty of Medicine Pontificia Universidad Católica de Chile Santiago Chile
6. Medical Genomics and Metabolic Genetics Branch, National Human Genome Research Institute National Institutes of Health Bethesda Maryland USA