1. Department of Invasive Technology, Nantong Third People's Hospital, Nantong University, Nantong, Jiangsu 226006, P.R. China
2. Nantong Institute of Liver Diseases, Nantong Third People's Hospital, Nantong University, Nantong, Jiangsu 226006, P.R. China
3. Department of Gastroenterology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226021, P.R. China
4. Library of Nantong Third People's Hospital, Nantong Third People's Hospital, Nantong University, Nantong, Jiangsu 226006, P.R. China
5. Department of Gastroenterology and Hepatology, Nantong Institute of Liver Diseases, Nantong Third People's Hospital, Nantong University, Nantong, Jiangsu 226006, P.R. China