title: Occipitoposterior position in labor.
authors.forename: E
authors.initials: E
authors.lastname: Shearer
mesh_terms: D000767:Anesthesia, Epidural / Q000009:adverse effects; D001416:Back Pain / Q000209:etiology; D036861:Delivery, Obstetric; D005260:Female; D006801:Humans; D007746:Labor Presentation; D011247:Pregnancy