Preventing premature delivery.
D000649:Amniocentesis; D005260:Female; D006594:Hexoprenaline / Q000627:therapeutic use*; D006801:Humans; D007752:Obstetric Labor, Premature / Q000175:diagnosis / Q000517:prevention & control*; D010627:Phenethylamines / Q000627:therapeutic use*; D011247:Pregnancy
D010627:Phenethylamines; D006594:Hexoprenaline