1. Department of Otorhinolaryngology-Head and Neck Surgery, Shanghai Zhongshan Hospital affiliated to Fudan University, Xuhui District, P. R. China;
2. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai, P. R. China;
3. School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou, P.R. China;
4. Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm;
5. Department of Neurotology and Audiology, Karolinska University Hospital, Stockholm, Sweden;
6. Department of Otolaryngology, Karolinska University Hospital, Stockholm, Sweden