title: Posterior presentation comments.
authors.forename: J O
authors.initials: JO
authors.lastname: Escamilla
mesh_terms: D005260:Female; D006801:Humans; D007746:Labor Presentation; D007743:Labor, Obstetric; D007744:Obstetric Labor Complications / Q000517:prevention & control*; D011247:Pregnancy; D018570:Risk Assessment