Santhanagopal, S., M. Sebastian, M. M. Muniswamy, and A. Pilar. “A Study on Vitamin D Status Among Orthopaedic Patients”. International Journal of Research in Orthopaedics, vol. 6, no. 2, Feb. 2020, pp. 286-91, doi:10.18203/issn.2455-4510.IntJResOrthop20200036.