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.
Alexander MD, English J, Hetts SW.Alexander MD, et al. Among authors: english j.BMJ Case Rep. 2013 Mar 6;2013:bcr2012010632. doi: 10.1136/bcr-2012-010632.BMJ Case Rep. 2013.PMID: 23470672Free PMC article.
Hetts SW, English JD.Hetts SW, et al.Neuroimaging Clin N Am. 2010 Nov;20(4):493-510. doi: 10.1016/j.nic.2010.07.009.Neuroimaging Clin N Am. 2010.PMID: 20974373Review.