title: The onset of labor.
authors.affiliation: Department of Obstetrics and Gynaecology, University Hospital, Uppsala, Sweden.
authors.forename: U
authors.initials: U
authors.lastname: Ulmsten
mesh_terms: D002584:Cervix Uteri / Q000502:physiology; D005260:Female; D005333:Fetus / Q000502:physiology; D006801:Humans; D007745:Labor Onset / Q000502:physiology*; D009215:Myometrium / Q000502:physiology; D011247:Pregnancy