1. Institute of Anatomy I; Heinrich Heine University, Universitätsstrasse 1; 40225 Düsseldorf Germany
2. Department of Orthopedics; University Hospital Düsseldorf; Düsseldorf Germany
3. Exercise, Health, and Technology Center; Shanghai Jiao Tong University; Shanghai China
4. Department of Molecular and Cellular Sports Medicine; German Sport University Cologne; Cologne Germany
5. Faculty of Sport Sciences; Goethe University Frankfurt; Frankfurt Germany