Extensive listing of medical scholarly journal articles compiled by the U.S. government, some available full text.
If you find an article that isn't full-text (in a bibliography or abstract only database), here are a few options.
Use Google Scholar with the Full Text@Grace College feature to find scholarly articles within the library's collection.
Set your preferences in Google Scholar:
Broad collection of scholarly journals, magazines, and newspapers in most academic subjects. A great starting point for any topic!