Participants and recruitment
RECRUITMENT, UPPER GASTROINTESTINAL BLEEDING
Participants who fulfil the following criteria are eligible:Inclusion criteriaAged ≥ 18 yearsAim to undergo screening, surveillance, and diagnosisUndergo sedated EGDAble to read, understand, and sign informed consentExclusion criteriaEGD contraindicationsNot suitable for sedated endoscopy after anaesthesia evaluationBiopsy contraindicationsActive upper gastrointestinal bleeding or emergency oesophagogastroduodenoscopy (EGD)PregnancyUpper gastrointestinal surgery or residual stomachNot suitable for recruitment after investigator evaluation because of other high-risk conditions