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.
Winter TC, Rose NC.Winter TC, et al.AJR Am J Roentgenol. 2018 Apr;210(4):906-912. doi: 10.2214/AJR.17.18343. Epub 2018 Feb 15.AJR Am J Roentgenol. 2018.PMID: 29446677Review.