1. Department of Oral and Maxillofacial Surgery; Campus Virchow-Clinic; Charité - Universitätsmedizin Berlin; Berlin Germany
2. Department of Biometry and Clinical Epidemiology; Campus Benjamin-Franklin; Charité - Universitätsmedizin Berlin; Berlin Germany
3. Department of Oral Medicine, Dental Radiology and Oral Surgery; Campus Benjamin-Franklin; Charité - Universitätsmedizin Berlin; Berlin Germany
4. Department of Operative and Preventive Dentistry; Campus Benjamin-Franklin; Charité - Universitätsmedizin Berlin; Berlin Germany