The effect of zinc sulfate on immunologic response to recombinant hepatitis B vaccine in elderly
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2011 Kowsar M.P.Co. All rights reserved."/> Background: Hepatitis B is the major cause of chronic hepatitis and cirrhosis in Iran. Sanitation and immunization is one of the most effective measures for prevention of the disease which is now widely used in developing countries. However, the immune response to the vaccine varies by age.
2011 Kowsar M.P.Co. All rights reserved."/>