• Meta-Search Engines tutorial from the U.C. Berkeley library includes sections such as "What are Meta-Search Engines?" "How do they work?" "How do I choose which one to use?" and a table of features of recommended meta search engines.
• Meta Search Engines includes detailed comparisons and reviews of many popular meta search engines.
• For a comprehensive review of meta search engines, see Meta Search Engines by Nancy Garman, ONLINE, May 1999 (& scroll to the bottom of the article).

MEDICAL SEARCH TOOLS AND SERVICES

Citeline Designed by San Francisco-based Citizen 1 Software, provides links to more than 6000 select WWW resources. Enter a disease, therapy or topic, or limit a search to a disease and treatment; includes links to organizations, news and journals, research, and trials.

CliniWeb International Enter a MeSH term to view a list of related terms from the MeSH tree structures; select appropriate subject heading to find associated WWW pages; uses the Saphire search engine.

Doctor's Guide to the Internet Includes: medical news, alerts, and news from conferences, the literature, newswires and the 'net; "New Medical Sites of the Week" section; listing of new drugs or indications recently approved in the U.S. and around the world. Also includes medical conferences and CME/CHE events, with a database arranged by country/state, date & location; a medical bookstore; and a database of medical sites on the Web (listed by categories).

Health On The Net Foundation Includes links to a variety of medical sites, hospitals, and support communities; a searchable database of medical images and movies; MeSH classifications; papers from conferences and other medical sources.

HealthGate Includes research tools such as links to medical procedures, drug information, a bookstore, journal literature databases (EMBASE, PsycINFO, etc.); online continuing education credit from the Boston University School of Medicine, and professional postgraduate services; a "news and reviews" section containing Reuters Medical News, software reviews, and book reviews; and patient education materials such as healthy living magazines, MDX HealthDigest, and more.

MDChoice MDchoice.com is a web-based Medicine and Health portal. Physician-reviewed information is available.

MEDLINEplus Contains up-to-date, quality health care information from the world's largest medical library, the National Library of Medicine at the National Institutes of Health. MEDLINEplus is for anyone with a medical question. Both health professionals and consumers can depend on it for accurate, current, medical information.

Medscape Includes news, CME opportunities, practice guidelines, treatment updates, summaries of clinically-focused journal literature; access to a collection of over 25,000 full-text articles. Also includes conference summaries & schedules with next-day summaries as well as schedules of upcoming conferences by specialty area; patient resources such as a directory of organizations, agencies, and hotlines; discussion lists; and a "grand rounds & clinical challenges" section containing self-assessment features on a specialty basis, including Image of the Week, Case Presentations, Virtual Consult, ECG of the Week, and more. Services included e-mail accounts, drug information, a bookstore, and more; registration is required/some services are fee-based.

Medsite Links to more than 10,000 reviewed medical sites. Includes an A - Z index of medical diseases and specialties; online chat room lead by health and medical experts; and a "professional services" section with e-mail, a bookstore, events calendars, medical supplies listings, and more.

Medical Matrix Contains a well-organized index to medical information on the Web. Index catagories include specialty and disease areas, clinical practice, literature, education, healthcare and professionals, technology and marketplace, and more. Registration required.

MedWeb Sponsored by the Emory University Health Sciences Center Library; includes a free text search engine; links to thousands of health-related WWW sites which are organized by detailed categories including academic departments, specialty areas, diseases & syndromes, directories, disabilities, discussion groups, educational resources, electronic publications, technology, products, professional organizations, problem-based learning, and more.

MedWeb Plus not affiliated with MedWeb Uses MeSH (Medical Subject Headings) and the UMLS (Unified Medical Language System) to search a subject index of close to 800 topics.

Medical World Search Enables users to search the full text nearly 100,000 Web pages from thousands of selected medical sites; uses the National Library of Medicine's Unified Medical Language System (UMLS) to recognize medical terminology.

Physicians' Online An Internet service marketed specifically for M.D.'s and other healthcare professionals.

Virtual Hospital From the University of Iowa specializes in patient education and health care materials on a large variety of medical topics. Includes information from medical textbooks.

• Evaluating Web Resources from the Widener University, Wolfgram Memorial Library
• Glossary of Internet Terms
  
• A Modular Approach to Teaching/Learning the World Wide Web from the Widener University, Wolfgram Memorial Library
  
• Lists of Listservers
  
• Meta-Search Engines tutorial from the U.C. Berkeley library includes sections such as "What are Meta-Search Engines?" "How do they work?" "How do I choose which one to use?" and a table of features of recommended meta search engines.
• Meta Search Engines includes detailed comparisons and reviews of many popular meta search engines.
• Search Engine Watch includes lists of basic features of major WWW search engines and explanations on how search engines work
  
• Search Engines Worldwide is an extensive list of search engines and directories.
  
• Web Search Tool Features Chart contains a chart that details the scope, contents and search features of several popular search engines; also links to reviews, journal articles.
• Introduction to Search Engines is a comprehensive comparison of search engines from the Kansas City Public Library; includes detailed reviews and a detailed features comparison chart.
• How to Search the Web: A Guide to Search Tools explains how search tools are designed, and describes rules for using them; includes reviews and a search engine catalog which lists engines in order of usefulness; also includes a features comparison chart, general search tips & links to other resources. By Terry Gray, Palomar College, San Marcos, CA.
• Results Ranking in Web Search Engines by Martin P. Courtois and Michael W. Berry, ONLINE, May 1999.
• Exploring the WWW tutorial from the University of Georgia Center for Continuing Education.