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.
Krause U, Norlén BJ.Krause U, et al. Among authors: norlen bj.Lakartidningen. 1976 Mar 17;73(12):1084-5.Lakartidningen. 1976.PMID: 1256161Swedish.No abstract available.