Chakraborty, B., Bashar, T., Roy, K., Noor, R. and Rahman, M. M. (2011) “Persistence of Anti-HBs Antibody and Immunological Memory in Healthy Individuals Vaccinated with Hepatitis B Vaccine”, Stamford Journal of Microbiology, 1(1), pp. 37–41. doi: 10.3329/sjm.v1i1.9101.