Some journals, including NEJM, JAMA, and Science, provide free full-text articles on their own Web sites six or 12 months after publication. (Research is often available before then for access fees that average around $12 per article. And selected articles, particularly those with important public health implications, may be made available for free right away.) Many journal publishers also pay substantial sums to an innovative organization called HighWire Press, a division of the Stanford University Libraries, which provides online publishing services to hundreds of journals and establishes links to their sites. Perhaps the most interesting feature of HighWire is its Toll-Free Linking Program, in which a user who accesses one article can then link to any other research cited by that article for no charge; a single point of entry can therefore offer a researcher entrée to over 200,000 additional articles, according to HighWire's publisher. In addition, many publishers note that they do provide free online access to scientists in the Third World through a program called Health InterNetwork Access to Research Initiative, sponsored by the World Health Organization.