1. 1Department of Otorhinolaryngology, Head and Neck Surgery, Otto Körner Rostock University Medical Center, Rostock, Germany
2. 3Institute of Microbiology, Infectious Diseases and Immunology Charité – University Medicine Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany
3. 2Institute of Medical Microbiology, Virology and Hygiene, Rostock University Medicical Center, Rostock, Germany