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.
Salah MK, Hammady IM, Hamed MY, Abdel Aziz FT.Salah MK, et al. Among authors: hamed my.Zentralbl Veterinarmed A. 1970 Mar;17(3):257-60. doi: 10.1111/j.1439-0442.1970.tb02051.x.Zentralbl Veterinarmed A. 1970.PMID: 4996261No abstract available.