Shil, N., J. Biswas, A. Khatun, A. Rahman, N. Sultana, F. Easmin, and S. Sormin. “Incidence of Anti-HBc Antibody (IgG and IgM) Among HBsAg Negative Apparently Healthy Blood Donors”. Bangabandhu Sheikh Mujib Medical University Journal, vol. 9, no. 4, Dec. 2016, pp. 201-4, doi:10.3329/bsmmuj.v9i4.30241.