1. Department of Oral and Maxillofacial Surgery; Regensburg University Medical Center; Regensburg Germany
2. Department of Gynecology and Obstetrics; Regensburg University Medical Center; Regensburg Germany
3. Department of Pathology; Erlangen-Nuremberg University Medical Center; Erlangen Germany
4. Department of Otorhinolaryngology - Head and Neck Surgery; Regensburg University Medical Center; Regensburg Germany
5. Department of Otorhinolaryngology - Head and Neck Surgery; Erlangen-Nuremberg University Medical Center; Erlangen Germany