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.
Weber MF, van Roermund HJ, Vernooij JC, Kalis CH, Stegeman JA.Weber MF, et al.Prev Vet Med. 2006 Oct 17;76(3-4):222-36. doi: 10.1016/j.prevetmed.2006.05.005. Epub 2006 Jun 19.Prev Vet Med. 2006.PMID: 16787676