1. University School of Dental Medicine; Department of Operative Dentistry and Periodontology; Martin-Luther University Halle-Wittenberg; Halle (Saale) Germany
2. Clinic of Internal Medicine II; Martin-Luther University Halle-Wittenberg; Halle Germany
3. Department of Operative Dentistry; Periodontology and Preventive Dentistry; RWTH Aachen; Aachen Germany
4. Institute for Medical Epidemiology; Biostatistics and Informatics; Martin-Luther University Halle-Wittenberg; Halle Germany
5. Institute for Forensic Medicine; Martin-Luther University Halle-Wittenberg; Halle Germany