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为探讨晚期血吸虫病（下称晚血）并发胆囊结石的情况，我们于1996年9月至1997年3月，对昆山市20个乡镇的在册晚血患者进行了调查。1对象和方法1．1调查对象昆山市1986年建卡的在册晚血，由乡村医生上门通知患者，嘱其于次日晨空腹到镇卫生院进行检查。1．2调查方法每例检查对象
In order to explore the situation of advanced schistosomiasis (hereinafter referred to as “late blood”) complicated by gallstones, we conducted a survey on late-blooded patients in 20 townships in Kunshan from September 1996 to March 1997. 1 objects and methods 1.1 survey Kunshan City 1986 building card book late blood, by the village doctor to inform patients, instruct them to fasting to the town hospital the next morning for inspection. 1.2 Methods of investigation Each test object