1. Ehlers‐Danlos Syndrome National Diagnostic ServiceNorthwick Park and St. Mark's Hospitals, Harrow London UK
2. Sheffield Children's NHS Foundation TrustSheffield Diagnostic Genetics Service Sheffield UK
3. Genetics SciencePiazza Savonarola 11 Florence Italy
4. Connective Tissue Unit, Division of Metabolism and Children's Research CentreUniversity Children's Hospital Zurich Switzerland
5. Ehlers‐Danlos Syndrome National Diagnostic ServiceSheffield Children's Hospital Sheffield UK
6. Department of Medical GeneticsShinshu University School of Medicine Matsumoto Japan
7. Genetic Health Service New Zealand Wellington New Zealand
8. Department of PediatricsUniversity of Münster Münster Germany
9. Maritime Medical Genetics ServiceIWK Health Centre Halifax Nova Scotia Canada