PubMed at its best. Useful skills to perform an effective search, save it and automatically receive updates.

P (http://www.pubmed.gov) is the worldwide best known and accessed service for biomedical researchers. Since 1997 MEDLINE, the bibliographical database edited by the U.S. National Library of Medicine, with its over 17 million citations from about 5 000 journals in 37 languages from all over the world, became freely accessible via web. MEDLINE is the core of PubMed, but in the latest years PubMed has been integrating in-process items, free full texts, value-added services and other useful tools like the instant retrieval of “Related articles” for any citation. The Entrez interface, developed by the National Center for Biotechnology Information (NCBI) provides now an integrated search and retrieval system for all the NCBI databases: beyond MEDLINE, running a query by accessing the All Database option on the black navi-