Irsa Azhar et al. 2026. Association of Preoperative Sleep Fragmentation with Postoperative Urinary Retention Following Elective Lower-Limb Orthopedic Surgery: Sleep Disruption as a Perioperative Bladder-Risk Factor. DEVELOPMENTAL MEDICO-LIFE-SCIENCES. 3, 7 (Jul. 2026), 4–10. DOI:https://doi.org/10.69750/dmls.03.07.0219.