Flory, N Does the addition of morphine to brachial plexus block improve analgesia after shoulder surgery? [electronic resource] - British journal of anaesthesia Jul 1995 - 23-6 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial ISSN: 0007-0912 Standard No.: 10.1093/bja/75.1.23 doi Subjects--Topical Terms: AdultAgedAged, 80 and overAnalgesics, OpioidAnesthesia, GeneralAnesthetics, LocalBrachial PlexusBupivacaineDouble-Blind MethodEpinephrineFemaleHumansMaleMiddle AgedMorphineNerve BlockPain, Postoperative--drug therapyShoulder Joint--surgery