Biondi, DO, D. M., J. Xiang, PhD, M. Etropolski, MD, and B. Moskovitz, MD. “Tolerability and Efficacy of Tapentadol Extended Release in Elderly Patients ≥75 Years of Age With Chronic Osteoarthritis Knee or Low Back Pain”. Journal of Opioid Management, vol. 11, no. 5, Sept. 2015, pp. 393-0, doi:10.5055/jom.2015.0289.