Engelhardt, MD, PhD, FRCA T, Zaarour, MD C, Crawford, MBBS, FRCPC MW. Plasma cyclic guanosine 3′,5′-monophosphate levels: A marker of glutamate-nitric oxide-guanyl cyclase activity?. J of Opioid Management [Internet]. 2017 Nov. 1 [cited 2024 Apr. 29];7(6):462-6. Available from: https://wmpllc.org/ojs/index.php/jom/article/view/809