Yadav, Archana, and Pawan Kumar Raya. “ To Find the Association Between Vitamin D Deficiency and Pain Intensity in Patients With Low Back Pain: An Observational Study ”. Birat Journal of Health Sciences 10, no. 2 (August 31, 2025): 59–63. Accessed June 1, 2026. https://nepjol.info/index.php/bjhs/article/view/94879.