1. Allergy and Cancer Center, Otorhinolaryngology Hospital, the First Affiliated Hospital of Sun Yat-sen University, and Otorhinolaryngology Institute of Sun Yat-sen University, Guangzhou, China
2. Department of Otolaryngology, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
3. Department of Otolaryngology, Zhuhai City's Hospital, Zhuhai, China
4. Department of Otolaryngology, Yuebei People's Hospital, Yuebei, China