Renal DialysisHemodialysis Units, HospitalEndoscopyCapital ExpendituresEndoscopes, GastrointestinalDithioerythritolEndoscopy, GastrointestinalEndoscopy, Digestive SystemKidney Failure, ChronicHospital UnitsColonoscopyGastroscopyConscious SedationPeritoneal DialysisCapsule EndoscopyDialysisDialysis SolutionsPeritoneal Dialysis, Continuous AmbulatoryProspective StudiesIntensive Care UnitsGastrointestinal HemorrhageEndoscopesEsophagoscopyCapsule EndoscopesPeritonitisPeritoneumDuodenoscopyGastrointestinal DiseasesEsophageal DiseasesRetrospective StudiesTime FactorsGastroenterologyUpper Gastrointestinal TractDyspepsiaFiber Optic TechnologyMelenaHemostasis, EndoscopicStomach DiseasesTreatment OutcomeHelicobacter InfectionsCatheters, IndwellingHelicobacter pyloriHemodialysis SolutionsUreaIntensive Care Units, NeonatalEsophagitisBarrett EsophagusPeptic Ulcer HemorrhageNarrow Band ImagingUltrafiltrationEsophagusDuodenal UlcerHematemesisPeptic Ulcer