[Analysis of the association between occupational benzene series exposure and obstructive ventilatory disorder]. - Li XX; Zhou SY; Zhuang ZM; Gong MJ; Wei QL; Li XD (Zhonghua lao dong wei sheng zhi ye bing za zhi = Zhonghua laodong weisheng zhiyebing zazhi = Chinese journal of industrial hygiene and occupational diseases, 2026)