Dey, S. K., Nahar, Z., Chowdhury, S., Shahidullah, M., & Rahman, S. A. (2010). Immune Response to Hepatitis B Virus Vaccine in Term and Preterm Babies Received as per EPI Schedule. Bangladesh Journal of Child Health, 33(1), 1–5. https://doi.org/10.3329/bjch.v33i1.5668