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Tropical and Geographical Medicine|March 1, 1986
Prevalence and subtype of hepatitis B surface antigen (HBsAg) in the Saudi populationS Ramia, A Hossain, T M Bakir, et al.Transactions of the Royal Society of Tropical Medicine and Hygiene|January 1, 1987
Delta agent infection in Riyadh, Saudi ArabiaS Ramia, M A el-Hazmi, P A Vivian, et al.Pageof 1