1. Department of Otolaryngology-Head and Neck Surgery, Guangdong Second Provincial General Hospital, Southern Medical University, Guangzhou, People’s Republic of China;
2. Department of Otolaryngology-Head and Neck Surgery, Chinese PLA General Hospital, Beijing, People’s Republic of China;
3. Department of Otolaryngology-Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, People’s Republic of China;
4. Department of Otolaryngology-Head and Neck Surgery, The First Affiliated Hospital of China Medical University, Shenyang, People’s Republic of China;
5. Department of Otolaryngology-Head and Neck Surgery, Guangdong Second Provincial General Hospital, Guangzhou, People's Republic of China