title: Prevention of preterm parturition.
authors.forename: Jonathan P
authors.initials: JP
authors.lastname: Winickoff
authors.forename: Jonathan D
authors.initials: JD
authors.lastname: Klein
mesh_terms: D023802:Cerclage, Cervical; D005260:Female; D006801:Humans; D011247:Pregnancy; D047928:Premature Birth / Q000517:prevention & control*; D011374:Progesterone / Q000627:therapeutic use*
chemical_list: D011374:Progesterone