在结直肠癌高发国中其流行病学和影响是怎样的？
What is the epidemiology and impact of colorectal cancer in high-incidence countries?
本文就结直肠癌的国内外流行状况、发病危险因素及分子流行病学研究进展等问题进行简要概述。
This article reviews briefly the epidemic status, risk factors and the lastest study of molecular epidemiology on colorectal cancer.
目的了解国人遗传性非息肉病性结直肠癌（HNPCC）的临床病理及分子遗传学特征。
Objective To investigate the clinicopathological and molecular genetic characteristics of Chinese hereditary nonpolyposis colorectal cancer (HNPCC) pedigrees.
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