GastroscopyGastroscopesStomach DiseasesDyspepsiaEndoscopy, GastrointestinalHypnosis, AnestheticGastritis, AtrophicStomach UlcerHelicobacter pyloriStomach NeoplasmsEndoscopes, GastrointestinalHelicobacter InfectionsConscious SedationGastritisAntacidsStomachGastrointestinal HemorrhageBiopsySensitivity and SpecificityPepsinogen AEndoscopy, Digestive SystemGastric MucosaCapsule EndoscopyReferral and ConsultationGastrectomyGastrointestinal DiseasesEsophagitisPeptic UlcerDuodenal UlcerRetrospective StudiesMetaplasiaDiagnostic ErrorsOutpatient Clinics, HospitalDiagnostic Tests, RoutineAbdominal PainProspective StudiesEndoscopyDiagnostic Techniques and ProceduresColonoscopyWaiting ListsAnti-Ulcer AgentsFamily PracticeReproducibility of ResultsDiagnostic ImagingTomography, X-Ray ComputedEsophagusPyloric AntrumAppointments and SchedulesBreath TestsPatient SatisfactionGastrinsGastroesophageal RefluxMedical AuditEsophageal NeoplasmsTime FactorsReagent Kits, Diagnostic