Dalton J. “Nortriptyline Versus Sustained-Release Morphine Versus Combination Therapy In Chronic Lumbar Radiculopathy A Randomized Crossover Trial Of 3 Interventions (Double-Blind)”. Journal for ReAttach Therapy and Developmental Diversities 5, no. 2 (December 20, 2022): 800–807. Accessed July 27, 2026. https://mail.jrtdd.com/index.php/journal/article/view/3856.