title: Epidemic hypochlorhydria.
mesh_terms: D002167:Campylobacter / Q000472:pathogenicity; D005744:Gastric Acid / Q000378:metabolism*; D005745:Gastric Acidity Determination; D006801:Humans; D009603:Nitroso Compounds / Q000032:analysis
chemical_list: D009603:Nitroso Compounds