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.
Hansen SR, Spangler JE, Hansen JH, Davies HM.Hansen SR, et al.Org Lett. 2012 Sep 7;14(17):4626-9. doi: 10.1021/ol3020754. Epub 2012 Aug 24.Org Lett. 2012.PMID: 22920795