Ivanova, MA, J. I., Birnbaum, PhD, H. G., Yushkina, BA, Y., Sorg, MPH, R. A., Reed, MD, J. and Merchant, MBA, PhD, S. (2013) “The prevalence and economic impact of prescription opioid-related side effects among patients with chronic noncancer pain”, Journal of Opioid Management, 9(4), pp. 239–254. doi: 10.5055/jom.2013.0165.