1. Department of Osteology and Biomechanics; University Medical Center Hamburg-Eppendorf; Martinistr. 52; Hamburg; 20246; Germany
2. Institute of Orthopaedic Research and Biomechanics; Center of Musculoskeletal Research, University of Ulm; Helmholtzstr. 14; Ulm; 89081; Germany
3. Department of Physiology; Neuroendocrine Research Group, Monash University; Clayton Campus; Melbourne, Victoria; 3800; Australia
4. Department of Trauma; Hand and Reconstructive Surgery, University Medical Center Hamburg-Eppendorf; Martinistr. 52; Hamburg; 20246; Germany