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.
Lai FTT, Beeler PE, Yip BHK, Cheetham M, Chau PYK, Chung RY, Wong ELY, Yeoh EK, Battegay E, Wong SYS.Lai FTT, et al.Front Med (Lausanne). 2021 Jul 21;8:651925. doi: 10.3389/fmed.2021.651925. eCollection 2021.Front Med (Lausanne). 2021.PMID: 34368178Free PMC article.