Digestive Endoscopy Center,Department of Gastroenterology,Changhai Hospital,Naval Medical University,Shanghai 200433,China;
Unimed Scientific Inc.,Wuxi 214000,Jiangsu Province,China;
Department of Intensive Care Unit,Shanghai East Hospital,Tongji University,Shanghai 200120,China;
Department of Medical Quality,Medical and Health Administration,National Health Commission of China,Beijing 100044,China;
Endoscopy; Gastroscopy; Colonoscopy; Endoscopic; retrograde; cholangiopancreatography; Quality; control; Predictive; model; Performance; predictor;