GastroscopyGastroscopesReproducibility of ResultsStomach DiseasesDyspepsiaEndoscopy, GastrointestinalHypnosis, AnestheticGastritis, AtrophicObserver VariationStomach UlcerHelicobacter pyloriHelicobacter InfectionsStomach NeoplasmsEndoscopes, GastrointestinalConscious SedationGastritisAntacidsStomachGastrointestinal HemorrhagePepsinogen APsychometricsGastric MucosaEndoscopy, Digestive SystemBiopsyQuestionnairesReferral and ConsultationCapsule EndoscopyGastrectomyGastrointestinal DiseasesEsophagitisPeptic UlcerSensitivity and SpecificityDuodenal UlcerMetaplasiaOutpatient Clinics, HospitalPatient SatisfactionRetrospective StudiesAnti-Ulcer AgentsWaiting ListsEndoscopyFamily PracticeAbdominal PainProspective StudiesColonoscopyTranslationsFactor Analysis, StatisticalEsophagusPyloric AntrumAppointments and SchedulesGastrinsBreath TestsTranslatingMedical AuditGastroesophageal RefluxTime FactorsPain MeasurementEsophageal Neoplasms