Pradhan, Shaili, Shweta Agrawal, and Benju Shrestha. “Vitamin D, Calcium, Alkaline Phosphatase, and Parathyroid Hormone in Patients With and Without Chronic Periodontitis”. Journal of Nepalese Society of Periodontology and Oral Implantology 4, no. 2 (December 31, 2020): 51–56. Accessed September 1, 2024. https://nepjol.info/index.php/jnspoi/article/view/34229.