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.
Chapman BL, Liebert RB, Lininger MR, Groth JJ.Chapman BL, et al.Adolesc Med State Art Rev. 2007 May;18(1):11-23, vii-viii.Adolesc Med State Art Rev. 2007.PMID: 18605388Review.
Chapman BL.Chapman BL.Vet Clin North Am Small Anim Pract. 1991 Mar;21(2):315-27. doi: 10.1016/s0195-5616(91)50035-8.Vet Clin North Am Small Anim Pract. 1991.PMID: 2053253Review.