Marian Segal is a member of FDA's public affairs staff. Judith Levine Willis also contributed to this article. This article originally appeared in the October 1993 issue of FDA Consumer Magazine, revised September 1997. Get Your Medifocus Medguide Research Your Illness Visit our Medcenter and get your Medifocus Guide , trustworthy medical information specifically about your health condition. Bookstore Visit our AIDS-HIV Book Store and catch up on the latest treatments and remedies for your illness.
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