1. Nankai University, Tianjin, China;
2. Department of Otolaryngology, Head and Neck Surgery, Institute of Otolaryngology, Chinese PLA General Hospital, Beijing, China;
3. China National Clinical Research Center for Otolaryngologic Diseases;
4. Key Lab of Hearing Impairment Science of Ministry of Education, Beijing, China;
5. Key Lab of Hearing Impairment Prevention and Treatment of Beijing, Beijing, China