introduction: determining the overlap rates is a quantitative method to compare database contents. in this survey, traditional overlap, relative overlap and synthetic degrees of freedom between pubmed as a free database and scopus as a subscription-based one in the cardiovascular disease field have been determined. methods: this descriptive applied research was done during january to june 2009....

irst, the big news. Cellular and Molecular GastroenF terology and Hepatology (CMGH) has been accepted for indexing in PubMed Central, making all CMGH articles, starting with Volume 1, Issue 1, searchable as full text in PubMed over the next several weeks. Before explaining what this means, I want to begin by thanking those of you who have submitted to, reviewed for, read, or cited articles in C...