北京市1990~2004年甲型肝炎疫情报告病例的流行病学分析及甲肝疫苗接种效果评价
북경시1990~2004년갑형간염역정보고병례적류행병학분석급갑간역묘접충효과평개
An epidemiological analysis on the epidemic situation reporting cases of the acute hepatitis A in Beijing from 1990 to 2004 and the efficacy evaluation on the hepatitis A vaccine
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