1. Laboratory of Medical Genetics, Department of Molecular MedicineSapienza University, San Camillo‐Forlanini Hospital Rome Italy
2. Division of Medical GeneticsFondazione IRCCS‐Casa Sollievo della Sofferenza San Giovanni Rotondo (Foggia) Italy
3. Division of Biology and Genetics, Department of Molecular and Translational MedicineUniversity of Brescia Brescia Italy
4. Division of Metabolism and Children's Research CentreUniversity Children's Hospital Zurich Switzerland
5. Maritime Medical Genetics ServiceDalhousie University Halifax Canada
6. Laboratory of Medical GeneticsIRCCS Bambino Gesù Children Hospital Rome Italy
7. Department of Clinical GeneticsChildren's Health Ireland (CHI) at Crumlin Crumlin Ireland
8. Unit of Rare DiseasesIRCCS Institute Gianna Gaslini Genoa Italy
9. Center for Medical GeneticsGhent University Ghent Belgium
10. Unit of BioinformaticsFondazione IRCCS‐Casa Sollievo della Sofferenza San Giovanni Rotondo (Foggia) Italy
11. The Platinum Medical CenterThe Wellington Hospital London UK
12. Connective Tissue Unit, Division of Metabolism and Children's Research CentreUniversity Children's Hospital Zurich Switzerland