1. Department of General Surgery, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, Zhejiang 322000, China
2. Institute of Immunology, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310000, China
3. Department of Ultrasonography, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, Zhejiang 322000, China
4. Department of Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, HangZhou, Zhejiang 310000, China
5. Department of Respiratory and Critical Care Medicine, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, Zhejiang 322000, China
6. International Institutes of Medicine, The Fourth Affiliated Hospital of Zhejiang University School of Medicine, Yiwu, Zhejiang 322000, China