1. ICMR-Centre for Ageing and Mental Health, Kolkata, West Bengal, India
2. Department of Radiodiagnosis, Apollo Gleneagles Hospital, Kolkata, West Bengal, India
3. Community Medicine, IQ City Medical College, Durgapur, West Bengal, India
4. Department of Physiology, Centre for Nanoscience and Nanotechnology (CRNN) and Centre with Potential for Excellence in Particular Area (CPEPA), University of Calcutta, Kolkata, West Bengal, India