title: Dose-response function of epidural fentanyl versus sufentanil.
authors.forename: M S
authors.initials: MS
authors.lastname: Angst
mesh_terms: D015360:Analgesia, Epidural; D016362:Analgesia, Obstetrical; D000701:Analgesics, Opioid / Q000008:administration & dosage*; D002585:Cesarean Section; D004305:Dose-Response Relationship, Drug; D005260:Female; D005283:Fentanyl / Q000008:administration & dosage*; D006801:Humans; D016014:Linear Models; D010147:Pain Measurement; D010149:Postoperative Pain / Q000517:prevention & control*; D011247:Pregnancy; D012044:Regression Analysis; D017409:Sufentanil / Q000008:administration & dosage*
chemical_list: D000701:Analgesics, Opioid; D017409:Sufentanil; D005283:Fentanyl