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.
Hedström SA, Lidgren L, Andrén-Sandberg A.Hedström SA, et al.Lakartidningen. 1981 Oct 7;78(41):3601-2.Lakartidningen. 1981.PMID: 7321704Swedish.No abstract available.
Andren-Sandberg A, Mårtensson H, Siemert G.Andren-Sandberg A, et al.Lakartidningen. 1981 May 6;78(19):1959-61.Lakartidningen. 1981.PMID: 7266149Swedish.No abstract available.