Methods A case control study was conducted. 152 BP patients and 152 workers occupationally exposed to benzene without poisoning manifestations were involved.
方法采用病例-对照研究，选择152名苯中毒工人为病例组，152名接触苯而无中毒表现的工人为对照组。
Objective to explore the neurotoxic effects of aluminium and age dependent difference of neurobehavioral function among occupationally aluminium exposed workers.
目的探索铝的神经毒性和职业性铝作业工人神经行为功能的年龄依赖性差异。
The results of pilot measurements showed that the contents of bone lead in the occupationally exposed workers were higher than those in the control group.
对急性铅中毒工人的试验性测量结果表明，他们的骨铅含量明显高于对照组。
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