Vorsanger, PhD, MD, Gary J., Jim Xiang, PhD, Theophilus J. Gana, MD, PhD, Maria Luz G. Pascual, MD, MPH, and R. Rosanna B. Fleming, MS. “Extended-Release Tramadol (tramadol ER) in the Treatment of Chronic Low Back Pain”. Journal of Opioid Management 4, no. 2 (January 30, 2018): 87–97. Accessed November 24, 2024. https://wmpllc.org/ojs/index.php/jom/article/view/977.