title: Study of pyrosis: revaluation of the acid perfusion test.
mesh_terms: D000328:Adult; D001706:Biopsy; D004941:Esophagitis / Q000150:complications*; D004945:Esophagoscopy; D005260:Female; D005756:Gastritis / Q000150:complications*; D005773:Gastroscopy; D006356:Heartburn / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged