1. Institute of Audiology and Balance Science, Xuzhou Medical University, Xuzhou, P.R. China.
2. The Artificial Auditory Laboratory of Jiangsu Province, Xuzhou Medical University, Xuzhou, P.R. China.
3. Department of Neurosurgery, Affiliated People's Hospital of Jiangsu University, Zhenjiang, P.R. China.
4. Department of Otorhinolaryngology-Head and Neck Surgery, Affiliated Hospital of Xuzhou Medical University, Xuzhou, P.R. China.
5. School of Life Sciences, Xuzhou Medical University, Xuzhou, P.R. China.