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.
Rampini SK, Wolfensberger A, Sax H, Thienemann F.Rampini SK, et al.S Afr Med J. 2020 Jun 25;110(8):709-710.S Afr Med J. 2020.PMID: 32880289Free article.No abstract available.
Chen Q, Zu ZY, Jiang MD, Lu L, Lu GM, Zhang LJ.Chen Q, et al.Korean J Radiol. 2020 Jul;21(7):851-858. doi: 10.3348/kjr.2020.0342.Korean J Radiol. 2020.PMID: 32524785Free PMC article.Review.