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.
van Imhoff DE, Dijk PH, Weykamp CW, Cobbaert CM, Hulzebos CV; BARTrial Study Group.van Imhoff DE, et al.Eur J Pediatr. 2011 Aug;170(8):977-82. doi: 10.1007/s00431-010-1383-4. Epub 2011 Jan 7.Eur J Pediatr. 2011.PMID: 21213112Free PMC article.