1. Department of Oral and Maxillofacial Surgery and Facial Plastic Surgery, Ludwig Maximilians University, 80337 Munich, Germany
2. Institute of Musculoskeletal Medicine, University Hospital, LMU Munich, Fraunhoferstraße 20, 82152 Munich, Germany
3. Musculoskeletal University Center Munich, University Hospital, LMU Munich, Fraunhoferstraße 20, 82152 Munich, Germany