1. Chinese PLA General Hospital, Nanlou Respiratory Diseases Department, Beijing, China
2. Department of Respiratory Medicine, The 309th Hospital of People’s Liberation Army, Beijing, China
3. Chinese PLA General Hospital, Department of Nephrology, Beijing, China
4. Chinese PLA General Hospital, Editorial Office of Chinese Journal of Otology, Beijing, China
5. Chinese PLA General Hospital, Department of stomotology, Beijing, China
6. Chinese PLA General Hospital, Department of Clinical Laboratory, Beijing, China
7. Beijing Chao-yang Hospital, Department of Nephrology, Beijing, China