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笔者进行了北京地区近5年内老年戊型肝炎(HE)患者病毒抗体(抗-HEV)的调查。现报告如下。1 对象和方法1.1 对象 1991年3月~1996年2月,由解
I conducted in Beijing in the past 5 years, hepatitis E (HE) in patients with anti-virus antibody (anti-HEV) survey. The report is as follows. 1 objects and methods 1.1 object March 1991 ~ February 1996, by the solution