Gintzler, PhD AR, Liu, MD, PhD N-J. Harnessing endogenous opioids for pain relief: Fantasy vs reality. J of Opioid Management [Internet]. 2020 Jan. 1 [cited 2024 Nov. 22];16(1):67-72. Available from: https://wmpllc.org/ojs/index.php/jom/article/view/2702