Amraeipour, Sina, and Maryam Rostamnezhad. “The Effect of Sleep Quality on Perceived Stress in Patients With Chronic Pain: The Mediating Role of Rumination”. Mental Health and Lifestyle Journal (July 1, 2027): 1–17. Accessed October 10, 2026. https://mhljournal.com/index.php/mhlj/article/view/328.