Hemostasis, EndoscopicEndoscopyEndoscopy, GastrointestinalPeptic Ulcer HemorrhageGastrointestinal HemorrhageEsophagoscopyEndoscopy, Digestive SystemElectrocoagulationDuodenoscopyCholangiopancreatography, Endoscopic RetrogradeSclerotherapyGastroscopyGastric Antral Vascular EctasiaGastroscopesArgonEsophageal and Gastric VaricesEndoscopes, GastrointestinalElectrosurgeryPancreatitis, ChronicEndoscopesSphincterotomy, EndoscopicCystoscopyZenker DiverticulumRespiratory Tract FistulaBile Duct DiseasesHemostatic TechniquesPancreatic PseudocystTreatment OutcomeEnbucrilateDilatationLaser TherapyBile DuctsUpper Gastrointestinal TractDrainageLithotripsyBarrett EsophagusInjectionsGallstonesDissectionVesico-Ureteral RefluxDuodenal DiseasesIatrogenic DiseaseConstriction, PathologicCholangiographyRecurrenceCholestasisCatheterizationLigationColonoscopyEsophageal NeoplasmsStentsRetrospective StudiesStomach NeoplasmsAnastomosis, SurgicalFollow-Up StudiesSurgical Procedures, Minimally InvasiveEsophagusEndosonographyGastric MucosaGastroesophageal RefluxPostoperative ComplicationsPalliative CareLiver TransplantationProspective StudiesCombined Modality TherapyTomography, X-Ray ComputedTime Factors