Buscador de información médica en español (MEDES)
https://www.medes.com/Public/Home.aspx
Dialnet
https://dialnet.unirioja.es/
Drugs and Aging
http://www.adis.com/journals
Excerpta Medica
http://www.excerptamedica.com/
Google Scholar
http://scholar.google.es/
Karger Medical and Scientific Publishers (buscador bibliográficol)
http://www.karger.com/
Literature guide, The(All AMEDEO services are free of charge)
http://www.amedeo.com
National (US) (Library of Medicine´s search service)
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi/PubMed
Ovid
http://www.ovid.com
Scopus
http://www.scopus.com/