Data extracted from PubMed records are not reliable

Abstract

Bibliometrics on a research subject needs a careful selection of bibliographic records to be retrieved and downloaded. Whenever national production is evaluated or international output is compared, it is essential to have full information on institutional and country affiliation of every author. As Medline offers only the affiliation of the first author, it is mandatory to combine its results with other databases. Scopus is the obvious choice because it offers common elements in its data schema (such as PMID and Indexterms) and complete information on authors´ affiliation.