Sami, S. M., I. I. Salama, G. A. Abdel-Latif, L. A. El Etreby, A. I. Metwally, and N. F. Abd El haliem. “Hepatitis B Seroprotection and the Response to a Challenging Dose Among Vaccinated Children in Red Sea Governorate”. Open Access Macedonian Journal of Medical Sciences, vol. 4, no. 2, May 2016, pp. 219-25, doi:10.3889/oamjms.2016.043.