NCT04531475
- Conditions
- Deglutition Disorders, Digestive System Diseases, Duodenal Diseases, +11 more
- Locations
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- The First Affiliated Hospital of Bengbu Medical College Bengbu, Anhui, China
- Liuan People's Hospital Liu‘an, Anhui, China
- Beijing Friendship Hospital, Capital Medical University Beijing, Beijing Municipality, China
- The Affiliated Hospital of Guzihou Medical University Guiyang, Guizhou, China