摘要
Since medical science is a kind of empirical discipline,the mainpurposes of biomedical journals are to publish the up-to-dateconvincing clinical investigations from medical personnel,and torecommend thefindings to more clinical practitioners.These pub-lications are often presented by form of case report,case-controlstudy,cohort study,retrospective study,prospective study,andeven meta-analysis,etc.
