1. Department of Osteology and Biomechanics; University Medical Center Hamburg-Eppendorf; Hamburg Germany
2. Department of Orthopaedic Surgery; University Medical Center Hamburg-Eppendorf; Hamburg Germany
3. 1st Department of Medicine; University Medical Center Hamburg-Eppendorf; Hamburg Germany
4. Martin Zeitz Centre for Rare Diseases; University Medical Center Hamburg-Eppendorf; Hamburg Germany