1. Cancer Biotherapy Center, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
2. Department of Microbiology, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
3. Xinchang People's Hospital, Shaoxing, China
4. Department of Colorectal Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
5. Department of Laboratory Medicine, Memorial Sloan Kettering Cancer Center; Department of Pathology and Medicine, Weill Medical College of Cornell University, New York, NY, USA