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.
Shaida N, Bowden DJ, Barrett T, Godfrey EM, Taylor A, Winterbottom AP, See TC, Lomas DJ, Shaw AS.Shaida N, et al. Among authors: shaw as.Clin Radiol. 2012 May;67(5):461-7. doi: 10.1016/j.crad.2011.10.023. Epub 2011 Dec 15.Clin Radiol. 2012.PMID: 22176725