Analgesia for chronic pain without respiratory depression.
D000698:Analgesia; D059350:Chronic Pain; D006801:Humans; D009022:Morphine Derivatives; D059408:Pain Management; D012119:Respiration / Q000187:drug effects*; D012131:Respiratory Insufficiency
D009022:Morphine Derivatives
MORPHINE/derivatives; PAIN/therapy; RESPIRATION/effect of drugs on