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.
Gonggalanzi, Nafstad P.Gonggalanzi, et al. Among authors: nafstad p.Arch Public Health. 2017 May 1;75:20. doi: 10.1186/s13690-017-0188-6. eCollection 2017.Arch Public Health. 2017.PMID: 28469847Free PMC article.
Yangzong Y, Shi Z, Nafstad P, Håheim LL, Luobu O, Bjertness E.Yangzong Y, et al. Among authors: nafstad p.BMC Public Health. 2012 Oct 10;12:860. doi: 10.1186/1471-2458-12-860.BMC Public Health. 2012.PMID: 23050953Free PMC article.Review.
Sherpa LY, Deji, Stigum H, Chongsuvivatwong V, Nafstad P, Bjertness E.Sherpa LY, et al. Among authors: nafstad p.High Alt Med Biol. 2013 Mar;14(1):37-44. doi: 10.1089/ham.2012.1051.High Alt Med Biol. 2013.PMID: 23537259
Yangzong, Berntsen S, Bjertness E, Stigum H, Gonggalanzi, Bianba, Nafstad P.Yangzong, et al. Among authors: nafstad p.High Alt Med Biol. 2013 Mar;14(1):31-6. doi: 10.1089/ham.2012.1034.High Alt Med Biol. 2013.PMID: 23537258