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恶性肿瘤的发生与多种因素有关。一些职业和特殊的生活习惯与某些癌有密切关系。昭乌达盟是以蒙族为主体的少数民族地区,牧业发达。牧民的生活习惯,尤其是饮食习惯与农民截然不同。在几年的调查研究中,发现牧民在恶性肿瘤流行方面与农民有不同的特点。调查方法1976年进行了全盟死因回顾调查。但牧民与农民是混在一起的。1977～1979年间,在充分利用原调查的原始资料的基础上,又进一
The occurrence of malignant tumors is related to a variety of factors. Some occupations and special living habits are closely related to certain cancers. The Zhaowuda League is a minority area where the Mongolian minority is the main body and the animal husbandry is well developed. The herdsmen’s living habits, especially their eating habits, are completely different from those of farmers. In a few years of investigation and research, it was found that the herdsmen have different characteristics from the farmers in the epidemic of malignant tumors. Investigation Methods A survey of the cause of death of the Allied League was conducted in 1976. But herdsmen and farmers are mixed. Between 1977 and 1979, on the basis of making full use of the original data of the original survey, another