Ghosal , M., A. Debnath, S. Mondal, R. Chowdhary, and S. Mallik. “A Study of Applicability of Hamilton Depression Rating Scale in A Tertiary Psychiatry Clinic of Kolkata”. National Journal of Community Medicine, vol. 3, no. 02, June 2012, pp. 247-51, https://njcmindia.com/index.php/file/article/view/1688.