Rauck, MD RL, Bookbinder, MD SA, Bunker, MD TR, Alftine, MD CD, Ghalie, MD R, Negro-Vilar, MD, PhD A, de Jong, MD E, Gershon, MD S. A randomized, open-label study of once-a-day AVINZA® (morphine sulfate extended-release capsules) versus twice-a-day OxyContin® (oxycodone hydrochloride controlled-release tablets) for chronic low back pain: The extension phase of the ACTION trial. J of Opioid Management [Internet]. 2006 Nov. 1 [cited 2024 Nov. 24];2(6):325-33. Available from: https://wmpllc.org/ojs/index.php/jom/article/view/1151