1. Continuous low-dose intrathecal morphine administration in the treatment of chronic pain of malignant origin;Onofrio;Mayo Clin Proc,1981
2. Intrathecal drug delivery for the management of cancer pain: a multidisciplinary consensus of best clinical practices;Stearns;J Support Oncol,2005
3. Vital signs: overdoses of prescription opioid pain relievers—United States, 1999-2008;Morb Mortal Wkly Rep,2011
4. Center for pain relief, Inc;Deer;Pain Physician,2011
5. Polyanalgesic Consensus Conference 2012: recommendations for the management of pain by intrathecal (intraspinal) drug delivery: report of an interdisciplinary expert panel;Deer;Neuromodulation,2012