Phosphorus CompoundsRanitidineOrganometallic CompoundsAntacidsAnti-Ulcer AgentsMetronidazoleSalicylatesAmoxicillinHelicobacter pyloriHelicobacter InfectionsClarithromycinHistamine H2 AntagonistsFurazolidoneDimercaprolTinidazoleDuodenal UlcerDrug Therapy, CombinationTetracyclineOmeprazoleGermaniumKlatskin's TumorAnti-Bacterial Agents