1. Department of Otorhinolaryngology, Shanghai Ninth People’s Hospital, affiliated with Shanghai Jiao Tong University School of Medicine and Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai, China
2. Department of Otorhinolaryngology, Shanghai Ninth People’s Hospital, affiliated with Shanghai Jiao Tong University School of Medicine and Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai, China2medical students, Shanghai Jiao Tong Univ