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With the unbridled and often haphazard growth of the Internet, various guides have evolved to organize and simplify its use. These compilations of selected resources, generally arranged by topic or type, can be an invaluable aid. Guides existing on World Wide Web (WWW) servers not only provide links to resources all over the world, but also may include images, sounds, and video clips. (See Glowniak and Bushway, JAMA. 1994;271:1934-1939 for information on the WWW and Internet in general.) As with any guided tour, these tours of the Internet vary in completeness and currency.
With its focus on clinical medicine, Medical Matrix is one of several noteworthy efforts to organize the Internet biomedically. It is an ongoing project of the Internet Working Group of the American Medical Informatics Association and is accessed by using a graphical WWW browser, such as Mosaic or Netscape. Connecting to Medical Matrix the first time is
Pratt GF. Medical Matrix. JAMA. 1995;274(17):1405-1406. doi:10.1001/jama.1995.03530170085042