1. Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Naval Medical University, Naval Medical University, Shanghai 200003, P.R. China
2. Department of Health Management Center, The First Affiliated Hospital of Naval Medical University, Shanghai 200438, P.R. China
3. Department of Otolaryngology, Jinshan Hospital, Fudan University, Shanghai 201508, P.R. China
4. Department of Otolaryngology-Head and Neck Surgery, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, P.R. China
5. Department of Otolaryngology, Naval Medical Center, Naval Medical University, Shanghai 200052, P.R. China