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1978～1987十年间,兰州地区十二家主要医院共收治375697例病人,其中各类肿瘤9841例,占2.62％。原发性肺癌973例,占同期住院病人的
Between 1978 and 1987, a total of 375,697 patients were admitted to 12 major hospitals in Lanzhou, of which 9841 were of various types, accounting for 2.62%. 973 cases of primary lung cancer, accounting for the same period of hospitalized patients