1. Department of Infectious Diseases, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang, Henan, China
2. Department of Hepatobiliary Surgery, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang, Henan, China
3. Luoyang Digestive Diseases Institute, Digestive Disease Center of Luoyang City, Luoyang, Henan, China