MEDLINE is a database produced by the National Library of Medicine with over 18 million biomedical journal article indexed.
You can search MEDLINE by using:
Free account can be created for personalization. Date Coverage: 1966-date. Maximum Users: 44 Truncation: Truncation: *; Wildcard: ? Tutorial: http://www.screencast.com/users/lottes/folders/Jing/media/a7a0252d-37e8-4b6e-8d59-29f60369ada3
For further information see:
MEDLINE Fact Sheet
What's the Difference Between MEDLINE® and PubMed®?