Mohapatra, A, et al. “A Study of Non-Communicable Morbidity Pattern in Geriatric Patients Attending a Referral Railway Hospital in Allahabad, Uttar Pradesh”. National Journal of Community Medicine, vol. 2, no. 02, Sept. 2011, pp. 191-5, https://njcmindia.com/index.php/file/article/view/1878.