Ahad, Md Abdul, Md Abdul Alim, Abhijit Guho, Quazi Tarikul Islam, and Khan Abul Kalam Azad. “Role of Booster Dose on Antibody Titer After Recombinant Hepatitis B Vaccination”. Journal of Medicine 10, no. 2 (July 20, 2009): 67–76. Accessed November 29, 2021. https://www.banglajol.info/index.php/JOM/article/view/2817.