1. Highly Specialised Severe, Complex & Atypical OI ServiceSheffield Children's NHS Foundation Trust UK
2. Sheffield Clinical Genetics ServiceSheffield Children's NHS Foundation Trust UK
3. Ludwig Boltzmann Institute of Osteology at Hanusch Hospital of WGKK and AUVA Trauma Centre, Meidling, 1st Med. Dept. Hanusch Hospital1140 Vienna Austria
4. Medical SchoolUniversity of Sheffield UK
5. Metabolic Bone CentreNorthern General HospitalSheffield UK
6. Sheffield Diagnostic Genetics ServiceSheffield Children's NHS Foundation Trust UK
7. Department of PsychologySheffield Children's NHS Foundation Trust UK
8. Department of PsychologyUniversity of Sheffield UK
9. Academic Unit of Child HealthUniversity of Sheffield UK