A. Rajbhandari, R. K. Agrawal, A. Baral, A. Pokhrel, D. Shrestha, and R. Hada, “Estimation of Serum Vitamin D, Calcium and Phosphorus in Chronic Kidney Disease”, Med. J. Shree Birendra Hosp., vol. 16, no. 1, pp. 30–36, Aug. 2017.