1. Department of Oral and Maxillofacial Surgery, Plastic Surgery; University Medical Center of the Johannes Gutenberg-University; Mainz Germany
2. Department of Oral and Maxillofacial Surgery, Plastic Surgery; University Medical Centre; Rostock Germany
3. Department of Otorhinolaryngology; Molecular Tumor Biology Laboratory; University Medical Center of the Johannes Gutenberg-University; Mainz Germany