Bases de dados

Scielo
http://www.scielo.org/php/index.php

Capes
http://www.periodicos.capes.gov.br/

Nature
http://www.nature.com/

BVS
http://regional.bvsalud.org/php/index.php?lang=pt

Pubmed
http://www.ncbi.nlm.nih.gov/pubmed/