title: Randomized trial of epidural versus intravenous analgesia during labor.
authors.forename: J S
authors.initials: JS
authors.lastname: Lee
authors.forename: P
authors.initials: P
authors.lastname: Singh
mesh_terms: D015360:Analgesia, Epidural; D016362:Analgesia, Obstetrical; D005260:Female; D006801:Humans; D011247:Pregnancy; D016032:Randomized Controlled Trials as Topic; D012107:Research Design; D012306:Risk