Dialog, a Thomson business and a provider of online-based information services and integrated information solutions, has announced that the United Kingdom's National Health Service (NHS) has incorporated Dialog as an information provider in the NHS's new extranet serving users in England. The NHS's contract with Dialog, with an initial phase of three years, eventually will see up to 1.2 million health care professionals and administrators in England linked through the NHS extranet to information services supplied by Dialog. English universities and other teaching facilities also are now contracting with Dialog to access the Dialog customized content collection directly. Content being supplied by Dialog includes articles and reports aggregated from scientific, technical, and medical sources, plus an e-linking feature that takes users from document titles to online e-journals. NHS's choice of Dialog is part of the 4.8 million pound National Core Content Project, which is designed to provide NHS staff and its constituents with online access to a core collection of key electronic knowledge resources. Other information vendors contracted by the NHS are ProQuest and BioMed. NHS's extranet went live on 1 April 2003.