Abhishek Gupta, Uday Mohan1, Sarvada C. Tiwari2, Shivendra K. Singh1, Vijay K. Singh1
Department of Community Medicine, Navodaya Medical College, Raichur, Karnataka,
1Departments of Community Medicine and Public Health and 2Geriatric Mental Health, K. G. Medical University, Uttar Pradesh, Lucknow, India