Affiliation: | 1 Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, PR China;2 Department of Gastroenterology & Hepatology, Chinese PLA General Hospital, Beijing, PR China;3 Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Henan, PR China;4 The Pirbright Institute, Pirbright, UK |