Passik, PhD, S. D., K. L. Kirsh, PhD, L. Whitcomb, MA, J. R. Schein, PhD, MPH, M. A. Kaplan, PhD, S. L. Dodd, MSc, L. Kleinman, PhD, N. P. Katz, MD, and R. K. Portenoy, MD. “Monitoring Outcomes During Long-Term Opioid Therapy for Noncancer Pain: Results With the Pain Assessment and Documentation Tool”. Journal of Opioid Management, vol. 1, no. 5, Nov. 2005, pp. 257-66, doi:10.5055/jom.2005.0055.