1. Department of Gastroenterology, The Second People's Hospital of Yichang, Yichang, Hubei 443000, P.R. China
2. Department of Anesthesia, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
3. Department of Gastroenterology, Hubei Provincial Hospital of Traditional Chinese and Western Medicine, Wuhan, Hubei 430015, P.R. China
4. Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
5. Department of Pulmonary Diseases, Jingmen City Hospital of Traditional Chinese Medicine, Jingmen, Hubei 448000, P.R. China
6. School of Clinical Medical, Hubei University of Chinese Medicine, Wuhan, Hubei 430060, P.R. China
7. Department of Hepatology, Hubei Provincial Hospital of Chinese Medicine, Wuhan, Hubei 430074, P.R. China