Md Ali, S., and N. A. Samat. “Relative Risk Estimation for the Epidemiology of Hepatitis B in Malaysia: An Analysis Based on SMR Method and Poisson- Gamma Model (61 - 68)”. EDUCATUM Journal of Science, Mathematics and Technology, vol. 2, no. 1, June 2015, https://ejournal.upsi.edu.my/index.php/EJSMT/article/view/29.