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Mayo Clinic — Comprehensive medical diagnosis and treatment; locations and services; request an appointment.

Authoritative health information, drawing on the expertise of the 8,000 faculty physicians at the Harvard Medical School and its world-famous affiliated hospitals.

Read doctor-produced health and medical information written for you to make informed decisions about your health concerns.

Trusted medical information to encourage healthy living. Enjoy free health tools and view detailed doctor-reviewed information about diseases, medical symptoms, treatments, drugs, and nutrition.

The National Library of Medicine (NLM), on the campus of NIH in Bethesda, Maryland, is the world

wikiHow is a wiki based collaboration to build the world’s largest, highest quality how to manual. Our multilingual how to manual has free step-by-step instructions on how to do all types of things.

Discovery Health explores the human body in all its scientific and cultural aspects. Learn about diseases, wellness, medical technology and more on Di

Ethicon Endo-Surgery offers innovative surgical products to clinicians for use in minimally invasive procedures. Learn more about our surgical instruments.