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.
Iglic A, Kralj-Iglic V, Hägerstrand H.Iglic A, et al.Med Biol Eng Comput. 1998 Mar;36(2):251-5. doi: 10.1007/BF02510754.Med Biol Eng Comput. 1998.PMID: 9684471