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.
Davis JW, Wang B, Tomczak E, Chi-Fu C, Harmouch W, Reynoso D, Keiser P, Cabada MM.Davis JW, et al. Among authors: harmouch w.BMJ Open. 2022 Mar 31;12(3):e058238. doi: 10.1136/bmjopen-2021-058238.BMJ Open. 2022.PMID: 35361651Free PMC article.