White, P F Role of a continuous background infusion with epidural patient-controlled analgesia. [electronic resource] - Anesthesia and analgesia Mar 1995 - 646-7 p. digital Publication Type: Comment; Letter ISSN: 0003-2999 Standard No.: 10.1097/00000539-199503000-00059 doi Subjects--Topical Terms: Analgesia, EpiduralAnalgesia, ObstetricalAnalgesia, Patient-ControlledFemaleHumansPregnancy