title: Up-and-down allocation.
authors.forename: M O
authors.initials: MO
authors.lastname: Columb
authors.forename: S
authors.initials: S
authors.lastname: Maguire
mesh_terms: D000577:Amides / Q000008:administration & dosage*; D015360:Analgesia, Epidural / Q000379:methods*; D016362:Analgesia, Obstetrical / Q000379:methods*; D000701:Analgesics, Opioid; D000779:Anesthetics, Local / Q000008:administration & dosage*; D004334:Drug Administration Schedule; D004338:Drug Combinations; D005260:Female; D006801:Humans; D011247:Pregnancy; D000077212:Ropivacaine; D013223:Statistics as Topic; D017409:Sufentanil
chemical_list: D000577:Amides; D000701:Analgesics, Opioid; D000779:Anesthetics, Local; D004338:Drug Combinations; D000077212:Ropivacaine; D017409:Sufentanil