Alhaj, A., A. R. Alqubaty, M. Nassar, and F. Al-qadasi. “Assessment of Certain Biochemical Parameters Among Petrol Station Workers in Sana’a City, Yemen”. Yemeni Journal for Medical Sciences, vol. 12, no. 1, Dec. 2018, pp. 44-50, doi:10.20428/yjms.v12i1.1426.