Chopra, D., S. . Manchanda, S. . Manchanda, and N. Jauhari. “A Study of Morbidity Pattern in Indoor Patients in a Tertiary Care Hospital in Lucknow”. National Journal of Community Medicine, vol. 8, no. 04, Apr. 2017, pp. 169-73, https://www.njcmindia.com/index.php/file/article/view/649.