title: Cervical length measurement and cervical cerclage to prevent preterm birth.
authors.affiliation: Division of Maternal Fetal Medicine, The Ohio State University, Columbus, Ohio 43210, USA. williams-48@medctr.osu.edu
authors.forename: Marvin
authors.initials: M
authors.lastname: Williams
authors.forename: Jay D
authors.initials: JD
authors.lastname: Iams
mesh_terms: D023802:Cerclage, Cervical; D005260:Female; D006801:Humans; D011247:Pregnancy; D047928:Premature Birth / Q000517:prevention & control*; D014463:Ultrasonography; D002581:Uterine Cervical Incompetence / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*