1. Department of Operative Dentistry; University School of Dental Medicine; Charité - Universitätsmedizin Berlin; Berlin; Germany
2. Department of Medical Informatics; Biometry and Epidemiology; Charité - Universitätsmedizin Berlin; Berlin; Germany
3. Department of Prosthodontics; Geriatric Dentistry and Craniomandibular Disorders; University School of Dental Medicine; Charité - Universitätsmedizin Berlin; Berlin; Germany