Payel Bhanja1, Satarupa Sengupta1, N. Yaima Singh2, Kamalesh Sarkar1, Sujit Kumar Bhattacharya1, Sekhar Chakrabarti1
1National Institute of Cholera and Enteric Diseases, P-33, C.I.T. Road, Scheme-XM, Beliaghata, Calcutta 700010, India
2ICMR Task Force Project on HIV/AIDS, Imphal, India