Facts & Comparison. Facts & Comparisons Web Site. http://online.factsandcomparisons.com/MonoDisp.aspx?monoID=fandc-hcp12947&quick=203844%7c5&search=203844%7c5&isstemmed=True&NDCmapping=-1&fromTop=true#firstMatch. Accessed October 3, 2016.
MS Contin [package insert]. Purdue Pharm L.P., Stamford, CT; June 2014. http://app.purduepharma.com/xmlpublishing/pi.aspx?id=ms. Accessed October 3, 2016,