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[Chang on saliva manganese, serum manganese and urine manganese in welders].
Zhonghua lao dong wei sheng zhi ye bing za zhi = Zhonghua laodong weisheng zhiyebing zazhi = Chinese journal of industrial hygiene and occupational diseases, 2012Xu-Qin, Du, Di-Xin, Wang, Li-Jun, Niu
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