Mallappa, S. B. . ., and R. T. . Sobagaiah. “Prevalence Of Depression Among Elderly Diabetes Mellitus Patients Attending Diabetes Clinic at Bangalore Medical College and Research Institute”. National Journal of Community Medicine, vol. 7, no. 03, Mar. 2016, pp. 198-00, https://www.njcmindia.com/index.php/file/article/view/892.