NIH is moving the launch of its new website to the fall to ensure the best possible experience for everyone who relies on our websites for health information, research, funding opportunities, and other resources.
The content in this publication was current at the time it was published, but it is not being updated. The publication is provided for historical purposes only.
U.S. Department of Health and Human Services
Public Health Service
National Institutes of Health
National Institute of Child Health and Human Development
February 2001