1. Department of Pediatrics, Division of Medical Genetics; Stanford University Medical Center; Stanford California
2. Department of Molecular, Cell and Developmental Biology; University of California, Los Angeles; Los Angeles California
3. Department of Orthopaedic Surgery; University of California, Los Angeles; Los Angeles California
4. International Skeletal Dysplasia Registry at UCLA; Los Angeles California
5. Department of Genome Sciences; University of Washington; Seattle Washington
6. Department of Pediatrics; University of Washington; Seattle Washington