Shengbing Zhao, Shuling Wang, Peng Pan, Tian Xia and Rundong Wang are co-first authors

Department of Gastroenterology/Digestive Endoscopy Center, Changhai Hospital, Second Military Medical University/Naval Medical University, National Clinical Research Center for Digestive Diseases (Shanghai), National Quality Control Center of Digestive Endoscopy, Shanghai, 200433, China

Shengbing Zhao, Shuling Wang, Peng Pan, Tian Xia, Rundong Wang, Quancai Cai, Xin Chang, Fan Yang, Lun Gu, Zixuan He, Jiayi Wu, Qianqian Meng, Tongchang Wang, Qiwen Fang, Yiqi Du, Zhaoshen Li & Yu Bai

Department of Gastroenterology, Yantai Zhifu Hospital, Yantai, 264000, China

Xiaomei Mou

Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, 430060, China

Honggang Yu

Department of Gastroenterology, Yantaishan Hospital of Yantai City, Yantai, 264008, China

Jinghua Zheng

Department of Gastroenterology, 967th Hospital of Joint Logistics Support Force, Dalian, 116021, China

Cheng Bai

Department of Gastroenterology, Army Medical Center, Chongqing, 400042, China

Yingbin Zou & Dongfeng Chen

Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, 210008, China

Xiaoping Zou

Digestive Disease Hospital of Heilongjiang Provincial Hospital, Harbin, 150001, China

Xu Ren

Department of Gastroenterology, Xinhua Hospital, Shanghai, Jiaotong University School of Medicine, Shanghai, 200092, China

Leiming Xu

Department 1 of Gastroenterology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054, China

Ping Yao

Department of Gastroenterology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200083, China

Guangsu Xiong

Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China

Xu Shu

Inner Mongolia Institute of Digestive Diseases, The Second Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou, 014030, China

Tong Dang

Department of Gastroenterology, Beijing Rectum Hospital, Beijing, 100071, China

Li Zhang

Department of Gastroenterology, 900th Hospital of Joint Logistics Support Force, Fuzhou, 350025, China

Wen Wang

Department of Gastroenterology, 940th Hospital of Joint Logistics Support Force, Lanzhou, 730050, China

Shengchao Kang

Department of Gastroenterology, Affiliated Hospital of Chifeng University, Chifeng, 024099, China

Hongfei Cao

Department of Digestive Endoscopy, First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China

Aixia Gong

Department of Gastroenterology, The Second Affiliated Hospital of Kunming Medical University, Kunming, 650101, China

Jun Li

Department of Gastroenterology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430014, China

Heng Zhang

Department of Gastroenterology and Hepatology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, 200092, China

Guangsu Xiong

LZS, BY, and ZSB contributed to study concept and design; ZSB, PP, WSL, XT, WRD, CX, YF, GL, HZX, WJY, MQQ, WTC, FQW, MXM, YHG, ZJH, BC, CDF, ZXP, RX, XLM, YP, XGS, SX, DT, WLX, WW, DSX, CHF, GAX, LJ, and ZH were involved in acquisition of data; ZSB, WSL, CQC, DYQ, HZX, and YF contributed to analysis and interpretation of data; ZSB was involved in drafting of the manuscript; ZSB, BY, LZS, PP, WSL, CQC, and DYQ contributed to critical revision of the manuscript; ZSB, CQC, HZX, WSL, CX, and XT were involved in statistical analysis; BY, LZS, and DYQ contributed to administrative, technical, or material support; and BY and LZS were involved in study supervision. All authors read and approved the final manuscript.