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.
Chen YC.Chen YC.J Water Process Eng. 2020 Oct;37:101409. doi: 10.1016/j.jwpe.2020.101409. Epub 2020 Jun 17.J Water Process Eng. 2020.PMID: 38620561Free PMC article.