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.
Matsui K, Kamijo-Ikemori A, Sugaya T, Yasuda T, Kimura K.Matsui K, et al.Circ J. 2012;76(1):213-20. doi: 10.1253/circj.cj-11-0342. Epub 2011 Nov 18.Circ J. 2012.PMID: 22094907Free article.