Gintzler, PhD, Alan R., and Nai-Jiang Liu, MD, PhD. “Harnessing Endogenous Opioids for Pain Relief: Fantasy Vs Reality”. Journal of Opioid Management 16, no. 1 (January 1, 2020): 67–72. Accessed May 4, 2024. https://wmpllc.org/ojs/index.php/jom/article/view/2702.