Use of ritodrine, terbutaline, and magnesium sulfate in preterm labor.
D005260:Female; D006801:Humans; D008278:Magnesium Sulfate / Q000627:therapeutic use*; D007752:Obstetric Labor, Premature / Q000517:prevention & control*; D011247:Pregnancy; D012312:Ritodrine / Q000627:therapeutic use*; D013726:Terbutaline / Q000627:therapeutic use*
D008278:Magnesium Sulfate; D012312:Ritodrine; D013726:Terbutaline