[Comparative study of vendal and morphine in delayed labor].
D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D009020:Morphine / Q000494:pharmacology*; D009022:Morphine Derivatives; D011247:Pregnancy
D009022:Morphine Derivatives; D009020:Morphine
LABOR; MORPHINE/pharmacology; MORPHINE/related compounds