[Gastritis, peptic ulcer and Campylobacter pylori].
Li
Z L
ZL
D002169:Campylobacter Infections; D004381:Duodenal Ulcer / Q000209:etiology*; D005756:Gastritis / Q000209:etiology*; D006801:Humans; D013276:Stomach Ulcer / Q000209:etiology*