Verma, A. K., S. K. Gautam, R. Giri, R. Singh, and V. Gupta. “Study of Vitamin D Level in Patients With Different Etiologies of Chronic Liver Disease and Its Correlation With Child Pugh Class in a Tertiary Care Centre in North India”. International Journal of Research in Medical Sciences, vol. 11, no. 6, May 2023, pp. 2028-31, doi:10.18203/2320-6012.ijrms20231612.