应注意到，在地域上，癌症在任何人群中的分布都是不均衡的。
It should be noted that geographically, cancers are unevenly distributed among any population.
通过慎重计划和开展的流行病学研究，可获得关于癌症在人群中分布情况的科学依据。
Scientific evidence on the distribution of cancer in the population can be obtained through carefully planned and executed epidemiological studies.
本文基于福建省某医院从2003年- 2007年肿瘤患者的调查，按住院人数统计，对顺位前三类癌症，其患者的寿命分布模型进行了研究。
Based on the survey of tumor patients in a hospital in Fujian Province from 2003 to 2007, this paper studied life distribution of cancer patients whose number is at top three.
应用推荐