1. School of Basic Medicine, Ningxia Medical University, Yinchuan, China
2. Ningxia Key Laboratory of Prevention and Control of Common Infectious Diseases, Yinchuan, China
3. Shiyan Integrated Traditional Chinese and Western Medicine Hospital, Shiyan, China
4. Department of Molecular Biology, Shanghai Centre for Clinical Laboratory, Shanghai, China
5. Research Center for Medical Science and Technology, Ningxia Medical University, Yinchuan, China
6. Ningxia Institute of Medical Science, Yinchuan, China
7. Department of Otolaryngology Head and Neck Surgery, General Hospital of Ningxia Medical University, Yinchuan, China
8. Department of Respiratory Medicine, General Hospital of Ningxia Medical University, Yinchuan, China