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在过去的20年中,国际肿瘤研究机构(IARC)已在专集论文中报导了对人类接触化学、物理和生物因子及三者的混合因素而致癌危险性系统评价的结果。IARC 专集中把已知或可疑的职业性致癌物分为两大类:
For the past two decades, the International Agency for Research on Cancer (IARC) has reported in a feature paper the results of a systematic review of the oncogenic risk assessment of human exposure to chemical, physical and biological factors and a combination of the three. The IARC feature classifies known or suspicious occupational carcinogens into two broad categories: