1. Department of Biochemistry, University of Calcutta, 35 Ballygunge, Circular Road, Kolkata 700019, India
2. National Institute of Cholera and Enteric Diseases, P-33 CIT Road, Scheme-XM, Beliaghata, Kolkata 700010, India
3. Department of Chemistry, University of Calcutta, 92 Acharya Prafulla Chandra Road, Kolkata 700009, India