1 Department of Infectious Diseases, Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, P. R. China.
2 Department of Gastrointestinal Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, P. R. China.
3 Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, P. R. China.
4 Department of Thoracic and Cardiovascular Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, P. R. China.
5 Department of Breast and Thyroid Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, P. R. China.
6 Department of Gynaecology and Obstetrics, Reproductive Medicine Center, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, P. R. China.