de la Iglesia, MD, Felix A., Gary W. Pace, PhD, Gary L. W. G. Robinson, PhD, Nuo-Yu Huang, MD, PhD, Warren Stern, PhD, and Patricia Richards, MD, PhD. “Tolerability and Efficacy of Two Synergistic Ratios of Oral Morphine and Oxycodone Combinations Versus Morphine in Patients With Chronic Noncancer Pain”. Journal of Opioid Management 8, no. 2 (March 1, 2012): 89–98. Accessed February 21, 2024.