ACOG criteria set. Quality evaluation and improvement in practice. Tocolysis. Number 34, June 1998 (replaces No. 31, February 1998). Committee on Quality Assessment. American College of Obstetricians and Gynecologists.
D005260:Female; D006801:Humans; D007752:Obstetric Labor, Premature / Q000517:prevention & control*; D011247:Pregnancy; D011785:Quality Assurance, Health Care; D015145:Tocolysis / Q000592:standards*; D014481:United States