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本研究以３９名男性（年龄３９．２±８．６）电焊工为观察组，３９名在工作和生活环境中无明确致癌物暴露史的男性（年龄３８．６±９．０）为对照组。对照组和观察组年龄（±５岁）与吸烟习惯相匹配，进行配对统计分析研究。取观察组和对照组全部研究对象早晨空腹静脉血...
In this study, 39 male (age 39.2 ± 8.6) welders were employed as observation group, 39 men (age 38.6 ± 9.0) with no history of clear carcinogen exposure in working and living environment were used as control group. The control and observation groups were matched for age (± 5 years) with smoking habits and analyzed by paired statistical analysis. Take the observation group and control group all subjects morning fasting venous blood ...