1. Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, People’s Republic of China
2. School of Medicine, Shihezi University, Shihezi, People’s Republic of China
3. Department of Gastroenterology and Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, People’s Republic of China
4. Department of Gastroenterology, Beijing Key Laboratory for Helicobacter Pylori Infection and Upper Gastrointestinal Diseases, Peking University Third Hospital, Beijing, People’s Republic of China
5. Department of Pathogen Biology and Biosecurity, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, People’s Republic of China