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我们为了解部队离退休老年人吸烟与膀味癌的关系，选择了在膳食习惯、生活条件和所处环境都基本相同的本地区部队离退休老年人进行流行病学调查现报告如下。一、对象与方法一对象成都市、绵阳市26个部队干休所的全体男性离退休老年人共2568人，年龄60岁一84岁，平均69．4岁。方
In order to understand the relationship between retired senior citizens smoking and bladder cancer, we have selected the current epidemiological survey of retired senior citizens in the region with similar dietary habits, living conditions and environment. I. Objects and Methods A subject A total of 2,568 retired elderly men from 26 military retired centers in Chengdu and Mianyang City were aged between 60 and 84, with an average age of 69.4. square