ElsesserK, CeglaT: Long-term treatment in chronic noncancer pain: Results of an observational study comparing opioid and nonopioid therapy. Scand J Pain, 2017; 17:87–98.
2.
ManchikantiL, AilinaniH, KoyyalaguntaD, et al.: A systematic review of randomized trials of long-term opioid management for chronic non-cancer pain. Pain Physician, 2011; 14:91–121.
3.
BallantyneJC: Chronic pain following treatment for cancer: The role of opioids. Oncologist, 2003; 8:567–575.
4.
MeierDE, BeresfordL: Outpatient clinics are a new frontier for palliative care. J Palliat Med, 2008; 11:823–828.
5.
MerlinJS, ChildersJ, ArnoldRM: Chronic pain in the outpatient palliative care clinic. Am J Hosp Palliat Med, 2013; 30:197–203.
