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.
Leinonen M, Saikku P.Leinonen M, et al.Scand Cardiovasc J. 2000;34(1):12-20. doi: 10.1080/14017430050142341.Scand Cardiovasc J. 2000.PMID: 10816055Free article.Review.