Lejus, C Postoperative extradural analgesia in children: comparison of morphine with fentanyl. [electronic resource] - British journal of anaesthesia Feb 1994 - 156-9 p. digital Publication Type: Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial ISSN: 0007-0912 Standard No.: 10.1093/bja/72.2.156 doi Subjects--Topical Terms: AdolescentAnalgesia, EpiduralChildChild, PreschoolDouble-Blind MethodFemaleFentanyl--adverse effectsHumansInfantMaleMorphine--adverse effectsPain, Postoperative--prevention & controlRespiration--drug effects