1. Department of Hepatobiliary Surgery, Air Force Medical Center, Fourth Military Medical University, Beijing 100142, PR China
2. Graduate School of China Medical University, Shenyang 110000, China
3. The College of Life Sciences, Northwest University, Xi’an, Shaanxi 710072, China
4. Key Laboratory for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, China
5. Department of Infectious Disease, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061, PR China
6. Fourth Military Medical University, Xi’an, Shaanxi 710072, PR China