Kirson, PhD, N. Y., A. Shei, PhD, H. G. Birnbaum, PhD, R. Ben-Joseph, PhD, and E. Michna, MD. “Medical Resource Use and Costs Among Pain Patients With Potential Opioid-Tolerability Issues”. Journal of Opioid Management, vol. 10, no. 5, Sept. 2014, pp. 305-10, doi:10.5055/jom.2014.0220.