RT - Journal Article T1 - A seroepidemiological study on hepatitis A in different age groups of children in Sari during 1376-77 JF - J-Mazand-Univ-Med-Sci YR - 1999 JO - J-Mazand-Univ-Med-Sci VO - 9 IS - 22 UR - http://jmums.mazums.ac.ir/article-1-926-en.html SP - 67 EP - 67 AB - LA eng UL http://jmums.mazums.ac.ir/article-1-926-en.html M3 ER -