Affiliation: | aDepartment of Otolaryngology, Head and Neck Surgery Charité-Universitätsmedizin Berlin, Berlin, Germany;bDepartment of Otolaryngology, Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guang Zhou, China;cClinic for Gynecology CCM/CBF, Charité-Universitätsmedizin Berlin, Berlin, Germany |