1. Manchikanti L, Singh A. Therapeutic opioids. A ten-year perspective on the complexities and complications of the escalating use, abuse, and nonmedical use of opioids. Pain Physician. 2008;11(2 suppl):63-88.
2. Gutstein HB, Akil H. Chapter 21. Opioid Analgesics. In: Brunton LL, Lazo JS, Parker KL, editors. Goodman & Gilman's the pharmacological basis of therapeutics, I: Accessed 30 Sep 2010. http://www.accessmedicine.com/content.aspx?aID=940653
3. Wang Z, Fermini B, Nattel S. Mechanism of fl ecainide's rate-dependent actions on action potential duration in canine atrial tissue. J Pharmacol Exp Ther. 1993;267:575-5781.
4. Bauman JL, Grawe JJ, Winecoff AP, Hariman RJ. Cocaine-related sudden cardiac death: a hypothesis correlating basic science and clinical observations. J Clin Pharmacol. 1994;34:902-911.
5. Afonso L, Mohammad T, Thatai D. Crack whips the heart: a review of the cardiovascular toxicity of cocaine. Am J Cardiol. 2007;100(6):1040-1043.