An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Gupta RS, Kim JS, Springston EE, Pongracic JA, Wang X, Holl J.Gupta RS, et al.BMC Health Serv Res. 2009 Aug 7;9:142. doi: 10.1186/1472-6963-9-142.BMC Health Serv Res. 2009.PMID: 19664230Free PMC article.
Gupta RS, Springston EE, Kim JS, Smith B, Pongracic JA, Wang X, Holl J.Gupta RS, et al.Pediatrics. 2010 Jan;125(1):126-32. doi: 10.1542/peds.2009-1116. Epub 2009 Dec 7.Pediatrics. 2010.PMID: 19969619