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.
Schiffman CJ, Hsu JE, Khoo KJ, Whitson A, Yao JJ, Wu JC, Matsen FA 3rd.Schiffman CJ, et al.JB JS Open Access. 2021 Dec 8;6(4):e21.00030. doi: 10.2106/JBJS.OA.21.00030. eCollection 2021 Oct-Dec.JB JS Open Access. 2021.PMID: 34901690Free PMC article.