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Triumeq [package insert]. GlaxoSmithKline, Research Triangle Park, NC; April 2016. https://www.gsksource.com/pharma/content/dam/GlaxoSmithKline/US/en/Prescribing_Information/Triumeq/pdf/TRIUMEQ-PI-MG.PDF#1. Accessed June 6, 2016
Metformin containing products. https://www.nlm.nih.gov/medlineplus/druginfo/meds/a696005.html. Accessed June 6, 2016.