1. Department of Otorhinolaryngology, University Medical Center of the Johannes Gutenberg-University, Mainz, Germany
2. Department of Chemistry, University Medical Center of the Johannes Gutenberg-University, Mainz, Germany
3. Department of Clinical Chemistry and Laboratory Medicine, University Medical Center of the Johannes Gutenberg-University, Mainz, Germany
4. Department of Oral and Maxillofacial Surgery, Plastic Surgery, University Medical Center Mainz, Mainz, Germany