Gastrointestinal HemorrhagePeptic Ulcer HemorrhageMelenaHematemesisMallory-Weiss SyndromeHemorrhageDuodenal DiseasesCerebral HemorrhageEsophageal and Gastric VaricesSubarachnoid HemorrhageBrunner GlandsEndoscopyEndoscopy, GastrointestinalEsophageal DiseasesStomach UlcerStomach DiseasesGastroscopyHemostatic TechniquesHemostasis, EndoscopicGastropexyMeckel DiverticulumIntracranial HemorrhagesIleal DiseasesDuodenal UlcerHypertension, PortalPeptic UlcerHemobiliaJejunal NeoplasmsRetinal HemorrhageDouble-Balloon EnteroscopyFiber Optic TechnologySplenic ArteryVascular MalformationsUlcerAcute DiseaseBarium SulfateAngiographyEmergenciesGastric FistulaEmbolization, TherapeuticPostpartum HemorrhageJejunal DiseasesDuodenal NeoplasmsTreatment OutcomeIntestinal FistulaAneurysm, FalseVascular FistulaBlood TransfusionIntestinal PerforationAspirinLaparotomyVitreous HemorrhageEye HemorrhageFatal OutcomeHepatic ArteryAneurysmRecurrenceGastrointestinal NeoplasmsAnti-Inflammatory Agents, Non-SteroidalProspective StudiesLiver CirrhosisPostoperative ComplicationsVaricose VeinsDuodenumTomography, X-Ray ComputedRisk FactorsRetrospective StudiesFibrinolytic AgentsIntestinal NeoplasmsLactonesProton Pump InhibitorsBasal Ganglia HemorrhageSulfonesMedical AuditVasospasm, IntracranialGastrointestinal DiseasesIntestine, SmallIntracranial Hemorrhage, HypertensiveRisk AssessmentTime FactorsPostoperative HemorrhageSeverity of Illness IndexHematomaHospitalizationPyrazolesLength of StayIntracranial AneurysmChoroid HemorrhageAge FactorsRandomized Controlled Trials as TopicPutaminal HemorrhageCohort Studies