Evidence-based guideline: treatment of painful diabetic neuropathy--report of the American Association of Neuromuscular and Electrodiagnostic Medicine, the American Academy of Neurology, and the American Academy of Physical Medicine & Rehabilitation.
Bril V, England JD, Franklin GM, Backonja M, Cohen JA, Del Toro DR, Feldman EL, Iverson DJ, Perkins B, Russell JW, et al. Muscle Nerve. 2011 Jun; 43(6):910-7. Epub 2011 Apr 11.