1. Department of Orthopedics and Traumatology, University Hospital Basel, Switzerland
2. Applied Stem Cell Research Center, University Medical Center Regensburg, Germany
3. Department of Orthopedics, University Children’s Hospital Basel, Switzerland
4. Department of Plastic, Hand-and Reconstructive Surgery, University Medical Center Regensburg, Germany
5. Department of Trauma Surgery, Regensburg University Medical Center, Regensburg, Germany
6. Department of Gynecology and Obstetrics, Kantonsspital Baselland, Liestal, Switzerland