Reference:
1. Medscape Pharmacists [Internet]. New York: WebMD; c1994-2014. Pharmacists News; [Revised 2014 Jan 8;cited 2014 Jan 8]. Available from:http://reference.medscape.com/drug/arthritis-formula-bengay-bayer-muscle-and-joint-cream-methylsalicylate-menthol-topical-999364#6
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