文章概述了电子出版物检索系统主页的设计原则、系统的功能特点。

The method is simple and convenient. The paper outlines the design of the system structure, function and feature.

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2007年所有出版物能够检索到26种主要的常见癌症。

All publications in 2007 were retrieved for the 26 most common cancers.

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证据：Medline检索，以确定有关1980年后此主题的出版物。

Evidence: MEDLINE search to identify publications related to this topic after 1980.

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