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.
van Heugten E, Sweet LA, Stumpf TT, Risley CR, Schell TC.van Heugten E, et al. Among authors: sweet la.J Am Vet Med Assoc. 1997 Oct 15;211(8):1039-42.J Am Vet Med Assoc. 1997.PMID: 9343551Clinical Trial.