title: Progesterone, pessary or cerclage for preterm birth prevention in twins: no answers yet.
authors.affiliation: Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.
authors.forename: J R
authors.initials: JR
authors.lastname: Biggio
mesh_terms: D023802:Cerclage, Cervical; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D010570:Pessaries; D011247:Pregnancy; D059285:Pregnancy, Twin; D047928:Premature Birth / Q000517:prevention & control; D011374:Progesterone
chemical_list: D011374:Progesterone