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

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Vitamin D Council is a nonprofit organization whose mission is to increase public and professional awareness of the health benefits of vitamin D and to end the global epidemic of vitamin D deficiency.

The leading source for trustworthy and timely health and medical news and information. Providing credible health information, supportive community, and educational services by blending award-winning expertise in content, community services, expert co...

Medscape is a free resource for Physicians, medical journal articles, MEDLINE, medical news, major conference coverage, and comprehensive drug information.

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

Prescription drug information and news for professionals and consumers. Search our drug database for comprehensive prescription and patient information on 24,000 drugs online

ABCNews.com is your breaking news resource for top stories, videos, photos, blogs, special reports and exclusive celebrity interviews on Good Morning America, World News, Nightline, 2020 and This Week.

Medpage Today is a CE and CME accredited medical news service, which provides daily coverage of developments that impact clinical practice, and offers free continuing medical education courses and credits to physicians and healthcare professionals.

UpToDate is an evidence based, peer reviewed information resource, available via the Web and Mobile Devices. Our community includes over 4,400 leading physicians, peer reviewers, editors and over 385,000 users. UpToDate includes access to over 8,300 ...