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Pregabalin for the treatment of painful diabetic peripheral neuropathy: a double-blind, placebo-controlled trial.

Pain. 2004 Aug 1; 110 (3): 628638628-638.
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Pregabalin for the treatment of postherpetic neuralgia: a randomized, placebo-controlled trial.

Neurology. 2003 Apr 22;60(8):1274-83.
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Efficient assessment of neuropathic pain drugs in patients with small fiber sensory neuropathies.

Pain. 2009 Jan 1; 141 (1-2): 192419-24.