1. Department of Gastroenterology, The People's Hospital of Anyang city, Anyang, China;
2. Graduate School, Xinxiang Medical University, Xinxiang, China;
3. Department of Pathology, The People's Hospital of Anyang city, Anyang, China;
4. The Third Clinical College, Xinxiang Medical University, Xinxiang, China;
5. Collaborative Innovation Laboratory, Xinxiang Medical University, Xinxiang, China;
6. Department of Respiratory Medicine, The People's Hospital of Anyang city, Anyang, China