Patient controlled analgesia: more than a machine.
McCaffery
M
M
D000328:Adult; D000700:Analgesics / Q000008:administration & dosage*; D002648:Child; D006801:Humans; D007263:Infusions, Parenteral; D007275:Injections, Intravenous; D012646:Self Administration
D000700:Analgesics