1. Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou City, China;
2. Institute of Hearing and Speech-Language Science, Sun Yat-sen University, Guangzhou City, China;
3. Department of Hearing and Speech Science, Xinhua College, Sun Yat-Sen University, Guangzhou, China;
4. Department of Otolaryngology, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, China