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.
Zahl PH, Kopjar B, Maehlen J.Zahl PH, et al.Tidsskr Nor Laegeforen. 2001 Jun 20;121(16):1928-31.Tidsskr Nor Laegeforen. 2001.PMID: 11488185Free article.Norwegian.
Strand BH, Zahl PH.Strand BH, et al. Among authors: zahl ph.Tidsskr Nor Laegeforen. 2001 Aug 30;121(20):2390-2.Tidsskr Nor Laegeforen. 2001.PMID: 11603048Free article.Norwegian.
Zahl PH, Strand BH.Zahl PH, et al.Tidsskr Nor Laegeforen. 2002 Feb 20;122(5):551; author reply 551.Tidsskr Nor Laegeforen. 2002.PMID: 11961987Free article.Norwegian.No abstract available.
Zahl PH, Rognerud M, Strand BH.Zahl PH, et al.Tidsskr Nor Laegeforen. 2003 Jun 26;123(13-14):1822-5.Tidsskr Nor Laegeforen. 2003.PMID: 12830253Norwegian.