1. Center for Rehabilitative Auditory Research Guizhou Provincial People's Hospital Guiyang City China
2. Centre for Speech and Language Therapy and Hearing Science, Cardiff School of Sport and Health Sciences Cardiff Metropolitan University Cardiff UK
3. Medical Examination Center Guizhou Provincial People's Hospital Guiyang City China
4. Department of Otolaryngology, Sun Yat‐sen Memorial Hospital Sun Yat‐sen University Guangzhou City China
5. Department of Speech‐Language Pathology and Audiology University of Pretoria Pretoria South Africa