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.
Liu C, Wu Q, Liang Z, Karimi L, Ferrier JA, Sheats J, Khalil H.Liu C, et al. Among authors: khalil h.BMC Med Educ. 2022 Jan 22;22(1):52. doi: 10.1186/s12909-021-03097-6.BMC Med Educ. 2022.PMID: 35065649Free PMC article.
Khalil H, Liu C.Khalil H, et al.Front Public Health. 2021 Oct 4;9:735055. doi: 10.3389/fpubh.2021.735055. eCollection 2021.Front Public Health. 2021.PMID: 34692625Free PMC article.