Quan Guo, MB ∗
Drs Guo and Zhang are co-first authors.
Department of Gastroenterology and Hepatology, Digestive Endoscopy Medical Engineering Research Laboratory, West China Hospital, Sichuan University, Chengdu, China
Jiawei Zhang, NP ∗
Drs Guo and Zhang are co-first authors.
Department of Geriatrics, Affiliated Hospital of Hebei University, Baoding, Hebei Province, China
Liansong Ye, MD ⁎ 
Department of Gastroenterology and Hepatology, Digestive Endoscopy Medical Engineering Research Laboratory, West China Hospital, Sichuan University, Chengdu, China
∗ Corresponding author: Liansong Ye, MD, Department of Gastroenterology and Hepatology, Digestive Endoscopy Medical Engineering Research Laboratory, West China Hospital, Sichuan University, No. 37, Guoxue Alley, Wuhou District, Chengdu, China. Department of Gastroenterology and Hepatology Digestive Endoscopy Medical Engineering Research Laboratory West China Hospital Sichuan University No. 37, Guoxue Alley, Wuhou District Chengdu China
Xiujiang Huang, MD ⁎ 
Department of Gastroenterology and Hepatology, The People's Hospital of the Qiandongnan Miao and Dong Autonomous Prefecture, Kaili, China
∗∗ Corresponding author: Xiujiang Huang, MD, Department of Gastroenterology and Hepatology, The People's Hospital of the Qiandongnan Miao and Dong Autonomous Prefecture, No. 31, Shaoshan South Road, Kaili, China. Department of Gastroenterology and Hepatology The People's Hospital of the Qiandongnan Miao and Dong Autonomous Prefecture No. 31 Shaoshan South Road Kaili China