Lapane, PhD, K. L., Quilliam, PhD, B. J., Benson, MS, C., Chow, PharmD, MPH, W. and Kim, PhD, MBA, M. S. (2013) “Gastrointestinal events after opioid treatment in nonmalignant pain: Correlates of occurrence and impact on health-related quality of life”, Journal of Opioid Management, 9(3), p. 205—216. doi: 10.5055/jom.2013.0161.