Pradhan S, Agrawal S, Shrestha B. Vitamin D, Calcium, Alkaline Phosphatase, and Parathyroid Hormone in Patients with and without Chronic Periodontitis. J Nepal Soc Perio Oral Implantol [Internet]. 2020 Dec. 31 [cited 2024 Nov. 21];4(2):51-6. Available from: https://nepjol.info/index.php/jnspoi/article/view/34229