Skip Navigation Archive: U.S. Department of Health and Human Services U.S. Department of Health and Human Services
Archive: Agency for Healthcare Research Quality www.ahrq.gov
Archival print banner

This information is for reference purposes only. It was current when produced and may now be outdated. Archive material is no longer maintained, and some links may not work. Persons with disabilities having difficulty accessing this information should contact us at: https://info.ahrq.gov. Let us know the nature of the problem, the Web address of what you want, and your contact information.

Please go to www.ahrq.gov for current information.

 

Areas of Interest

Doctor sitting at a keyboard with stethoscope visible

About CHAINOnline

Connecting health-care professionals and consumers to information they can use

Man and woman looking over some documents and books

Patient Tools

Guides and handouts provide timely and practical information

Scientist putting a slide on a microscope

Research Tools

Learn about CHAIN’s featured research and methods and tools.

 
 

 

The information on this page is archived and provided for reference purposes only.

 

AHRQ Advancing Excellence in Health Care