"MedlinePlus will direct you to information to help answer health questions. MedlinePlus brings together authoritative information from NLM, the National Institutes of Health (NIH), and other government agencies and health-related organizations. Preformulated MEDLINE searches are included in MedlinePlus and give easy access to medical journal articles. MedlinePlus also has extensive information about drugs, an illustrated medical encyclopedia, interactive patient tutorials, and latest health news." from website
PubMed provides free access to the NLM database of more than 11 million bibliographic citations and abstracts in the fields of medicine, nursing, dentistry, veterinary medicine, health care systems, and preclinical sciences. Links to the full-text of articles at participating publishers web sites. Links to the molecular biology databases maintained by NCBI. Interface developed by the National Center for Biotechnology Information (NCBI) at the National Library of Medicine (NLM), located at the National Institutes of Health (NIH). Links to full-text of selected articles are available using this URL to access PubMed.
RefWorks is a Web-based bibliography and database manager that allows you to create your own personal database by importing references from text files or online databases. You can use these references in writing papers and automatically format the paper and the bibliography in seconds.