1. Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
2. Oulu Center for Cell-Matrix Research, Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, Oulu, Finland
3. Section on Heritable Disorders of Bone and Extracellular Matrix, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
4. Section on Physical Biochemistry, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
5. Children’s National Health System, Washington, DC, USA
6. Division of Human Genetics, Department of Pediatrics, The Children’s Hospital of Philadelphia, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
7. Division of Clinical and Metabolic Genetics, Centre for Genetic Medicine, The Hospital for Sick Children, Toronto, ON, Canada
8. Department of Maternal-Fetal Medicine, Eastern Virginia Medical School, VA, USA
9. Center for Medical Genetics, Ghent University Hospital and Ghent University, De Pintelaan 185, B-9000 Ghent, Belgium
10. Analytic and Translational Genetics Unit, Massachusetts General Hospital, Boston, MA, USA