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.
Smith C, Egunsola O, Choonara I, Kotecha S, Jacqz-Aigrain E, Sammons H.Smith C, et al. Among authors: kotecha s.BMJ Open. 2015 Dec 9;5(12):e008194. doi: 10.1136/bmjopen-2015-008194.BMJ Open. 2015.PMID: 26656010Free PMC article.Review.