Mason, MD, Jay W., Ullrich S. Schwertschlag, MD, PhD, Vicki Klutzaritz, BS, and Daniel M. Canafax, PharmD. “Electrocardiographic and Cardiovascular Diagnostic Characteristics of Patients Receiving Long-Term Opioid Therapy for Pain”. Journal of Opioid Management 10, no. 2 (March 1, 2014): 103–109. Accessed April 29, 2024. https://wmpllc.org/ojs/index.php/jom/article/view/581.