GastroscopyGastroscopesStomach DiseasesDyspepsiaEndoscopy, GastrointestinalHypnosis, AnestheticGastritis, AtrophicStomach UlcerStomach NeoplasmsHelicobacter pyloriHelicobacter InfectionsEndoscopes, GastrointestinalConscious SedationGastritisAntacidsStomachGastrointestinal HemorrhagePepsinogen ABiopsyGastric MucosaEndoscopy, Digestive SystemPhysical ExaminationCapsule EndoscopyGastrectomyReferral and ConsultationGastrointestinal DiseasesEsophagitisPeptic UlcerDuodenal UlcerMetaplasiaOutpatient Clinics, HospitalRetrospective StudiesEndoscopyAbdominal PainColonoscopyAnti-Ulcer AgentsWaiting ListsProspective StudiesFamily PracticePyloric AntrumSensitivity and SpecificityEsophagusAppointments and SchedulesPatient SatisfactionGastrinsTomography, X-Ray ComputedBreath TestsGastroesophageal RefluxTime FactorsMedical AuditEsophageal NeoplasmsFollow-Up Studies