EntityQ5470539· pop 5· linked from 3 articlesForrest classificationSign in to saveclassification of upper gastrointestinal hemorrhageConnectionspeptic ulcer diseaseEntityInternational Standard Book NumberEntityWayback MachineEntitydigital object identifierEntityduodenumEntityQ180686EntityendoscopyEntitymortality rateEntityThe LancetEntityesophagogastroduodenoscopyEntityscientific controlEntityupper gastrointestinal bleedingEntityhematinEntityCategoriesDiagnostic gastroenterologyMedical scales