Dalton J 2022. 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, 2 (Dec. 2022), 800–807. DOI:https://doi.org/10.53555/jrtdd.v5i2.3856.