Al-Shamahy, H. A., M. A. Ajrah, A. G. Al-Madhaji, B. B. M. Al-Fraji, M. A. A. Ajrah, M. M. A. Al- Hajj, and A. M. Al-Hadad. “PREVALENCE AND POTENTIAL RISK FACTORS OF HEPATITIS B VIRUS IN A SAMPLE OF CHILDREN IN TWO SELECTED AREAS IN YEMEN”. Universal Journal of Pharmaceutical Research, Vol. 4, no. 3, July 2019, doi:https://doi.org/10.22270/ujpr.v4i3.269.