TiseoPJThalerHTLapinJInturrisiCEPortenoyRKFoleyKM. Morphine-6-glucuronide concentrations and opioid-related side effects: a survey in cancer patients. Pain1995; 61: 47–54.
2.
de StoutzNDBrueraESuarez-AlmazorM. Opioid rotation (OR) for toxicity reduction in terminal cancer patients. J Pain Symptom Manage1995; 10: 378–84.
3.
MacDonaldNDerLAllanSChampionP. Opioid hyperexcitability: the application of alternate opioid therapy. Pain1993; 53: 353–5.
4.
SjorgenPJensenNHJensenTS. Disappearance of morphine-induced hyperanalgesia after discontinuing or substituting morphine with other opioid agonists. Pain1994; 59: 313–6.