Gastrointestinal HemorrhageMallory-Weiss SyndromeDuodenal DiseasesEsophageal DiseasesStomach DiseasesEndoscopyPeptic Ulcer HemorrhageHematemesisMelenaAcute DiseaseEsophageal and Gastric VaricesEndoscopy, GastrointestinalGastropexyBrunner GlandsGastroscopyFiber Optic TechnologyStomach UlcerPeptic UlcerHemostasis, EndoscopicDuodenal UlcerHemorrhageCerebral HemorrhageSubarachnoid HemorrhageRecurrenceTreatment OutcomeAnti-Inflammatory Agents, Non-SteroidalMedical AuditUpper Gastrointestinal TractProspective StudiesRespiratory Tract InfectionsHemostatic TechniquesComfreyMeckel DiverticulumRisk FactorsIntracranial HemorrhagesIleal DiseasesEmbolectomyHypertension, PortalHemobiliaJejunal NeoplasmsDouble-Balloon EnteroscopyRetinal HemorrhageEndoscopy, Digestive SystemSplenic ArteryVascular MalformationsUlcerBarium SulfateEmergenciesAngiographyGastric FistulaEmbolization, TherapeuticPostpartum HemorrhageJejunal DiseasesDuodenal NeoplasmsIntestinal Fistula