Helicobacter pyloriHelicobacter InfectionsHelicobacterGastritisGastric MucosaUreaseBacteriaClarithromycinPeptic UlcerMetronidazoleBacterial ProteinsStomachAmoxicillinDyspepsiaAnti-Ulcer AgentsOmeprazoleStomach NeoplasmsStomach DiseasesGastritis, AtrophicAnti-Bacterial AgentsAntigens, BacterialBismuthPyloric AntrumDuodenal UlcerBreath TestsStomach UlcerHelicobacter hepaticusAntibodies, BacterialDNA, BacterialGastroscopyHelicobacter heilmanniiLansoprazoleMolecular Sequence Data2-PyridinylmethylsulfinylbenzimidazolesProton Pump InhibitorsDrug Therapy, CombinationTinidazoleLewis Blood-Group SystemMetaplasiaPepsinogen ABiopsyGram-Negative BacteriaUreaRanitidinePolymerase Chain ReactionEndoscopy, GastrointestinalGerbillinaeFurazolidoneDuodenitisGram-Positive BacteriaRNA, Ribosomal, 16S