| Recruiting | N/A | 200000 | RoW | questionnaire, Helicobacter pylori (H. pylori) test, fecal immunochemical test (FIT) | Zhejiang Cancer Hospital, Fenghua District People's Hospital, Ningbo City, Fenghua District Traditional Chinese Medicine Hospital, Ningbo City, Xikou Hospital in Fenghua District, Ningbo City, Yongkang Traditional Chinese Medicine Hospital, Yongkang First People's Hospital | Gastrointestinal Tumors | 12/27 | 12/28 | | |
