Barrett AM, Lucero MA, Le T, Robinson RL, Dworkin RH, Chappell AS. Epidemiology, public health burden, and treatment of diabetic peripheral neuropathic pain: a review. Pain Med. 2007 Sep 1;8(Suppl 2):S50-62.
Ackerman SJ, Mordin M, Reblando J, Xu X, Schein J, Vallow S, Brennan M. Patient-reported utilization patterns of fentanyl transdermal system and oxycodone hydrochloride controlled-release among patients with chronic nonmalignant pain. J Manag Care Pharm. 2003 May 1;9(3):223-31.