title: Patient-controlled epidural analgesia regimens for labor analgesia: background infusion or demand-only?
authors.forename: Niels
authors.initials: N
authors.lastname: Koopmans
authors.forename: Götz J K
authors.initials: GJ
authors.lastname: Wietasch
authors.forename: Michel M R F
authors.initials: MM
authors.lastname: Struys
mesh_terms: D015360:Analgesia, Epidural / Q000379:methods*; D016362:Analgesia, Obstetrical / Q000379:methods*; D016058:Analgesia, Patient-Controlled / Q000379:methods*; D005260:Female; D006801:Humans; D048949:Labor Pain / Q000188:drug therapy* / Q000503:physiopathology; D007743:Labor, Obstetric / Q000187:drug effects / Q000502:physiology; D011247:Pregnancy