title: [Effect of inhibitors of acid secretion in patients with duodenal ulcer. Comparative study of cimetidine, ranitidine and pirenzepine].
mesh_terms: D000293:Adolescent; D000328:Adult; D001570:Benzodiazepinones / Q000494:pharmacology*; D002927:Cimetidine / Q000494:pharmacology*; D002986:Clinical Trials as Topic; D004381:Duodenal Ulcer / Q000188:drug therapy*; D005260:Female; D005744:Gastric Acid / Q000378:metabolism*; D006635:Histamine H2 Antagonists / Q000494:pharmacology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010890:Pirenzepine; D011899:Ranitidine / Q000494:pharmacology*
chemical_list: D001570:Benzodiazepinones; D006635:Histamine H2 Antagonists; D010890:Pirenzepine; D002927:Cimetidine; D011899:Ranitidine
vernacular_title: Efecto de inhibidores de la secreción de ácido en ulcerosos duodenales. Estudio comparativo entre cimetidina, ranitidina y pirenzepina.