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癌症是影响人类健康的主要疾病之一,人们认识癌症已有千年以上的历史,系统地科学地研究它也有100多年了。半个世纪以来医学科学的进展很快,但是对于癌肿的防治,却远远不够理想。据1976年世界卫生组
Cancer is one of the major diseases that affect human health. People have known the history of cancer for more than a thousand years and systematically studied it for more than 100 years. Medical science has made rapid progress in the past half century, but cancer control is far from ideal. According to the 1976 World Health Unit