1. Dental Practice, with Focus on Temporomandibular Disorders, Competence Centre Steina Germany
2. Department of Prosthetic Dentistry, Gerodontology and Biomaterials University Medicine Greifswald Greifswald Germany
3. Department of Restorative Dentistry, Periodontology, Endodontology, Preventive Dentistry and Pediatric Dentistry University Medicine Greifswald Greifswald Germany