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.
Ellingsen DG, Thomassen Y, Langård S, Kjuus H.Ellingsen DG, et al. Among authors: langard s.Scand J Work Environ Health. 1993 Oct;19(5):334-41. doi: 10.5271/sjweh.1466.Scand J Work Environ Health. 1993.PMID: 8296182Free article.
Kjuus H, Istad H, Langård S.Kjuus H, et al. Among authors: langard s.Scand J Work Environ Health. 1981 Dec;7(4):290-7. doi: 10.5271/sjweh.2545.Scand J Work Environ Health. 1981.PMID: 7347914Free article.
Kjuus H, Langård S, Skjaerven R.Kjuus H, et al. Among authors: langard s.Scand J Work Environ Health. 1986 Jun;12(3):210-5. doi: 10.5271/sjweh.2156.Scand J Work Environ Health. 1986.PMID: 3749835Free article.
Melkild A, Langård S, Andersen A, Tønnessen JN.Melkild A, et al. Among authors: langard s.Scand J Work Environ Health. 1989 Dec;15(6):387-94. doi: 10.5271/sjweh.1834.Scand J Work Environ Health. 1989.PMID: 2617255Free article.