1 Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China; The School of Clinical Medicine, Fujian Medical University, Fuzhou, China.
2 Department of Gastroenterology, Lecong Hospital of Shunde District of Foshan City, Foshan, China.
3 Department of Gastroenterology, Lecong Hospital of Shunde District of Foshan City, Foshan, China. Electronic address: 11144917@qq.com.