[1]
R. L. Rauck, MD, “A randomized, open-label, multicenter trial comparing once-a-day AVINZA® (morphine sulfate extended-release capsules) versus twice-a-day OxyContin® (oxycodone hydrochloride controlled-release tablets) for the treatment of chronic, moderate to severe low back pain: Improved physical functioning in the ACTION trial”, J of Opioid Management, vol. 3, no. 1, pp. 35–43, Jan. 2007.