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.
Kelly C, Reid E, Lohan M, Alderdice F, Spence D.Kelly C, et al. Among authors: spence d.Int J Environ Res Public Health. 2014 Oct 14;11(10):10504-17. doi: 10.3390/ijerph111010504.Int J Environ Res Public Health. 2014.PMID: 25317982Free PMC article.
Kelly C, Alderdice F, Lohan M, Spence D.Kelly C, et al. Among authors: spence d.Midwifery. 2013 Feb;29(2):132-8. doi: 10.1016/j.midw.2011.12.003. Epub 2012 Nov 11.Midwifery. 2013.PMID: 23149240
Kelly C, Lohan M, Alderdice F, Spence D.Kelly C, et al. Among authors: spence d.Cult Health Sex. 2011 Aug;13(7):815-27. doi: 10.1080/13691058.2011.563865. Epub 2011 May 24.Cult Health Sex. 2011.PMID: 21452089
Gough A, Linden M, Spence D, Patterson CC, Halliday HL, McGarvey LP.Gough A, et al. Among authors: spence d.Eur Respir J. 2014 Mar;43(3):808-16. doi: 10.1183/09031936.00039513. Epub 2013 Jul 30.Eur Respir J. 2014.PMID: 23900988Free article.
Gough A, Spence D, Linden M, Halliday HL, McGarvey LPA.Gough A, et al. Among authors: spence d.Chest. 2012 Jun;141(6):1554-1567. doi: 10.1378/chest.11-1306. Epub 2011 Nov 23.Chest. 2012.PMID: 22116801Review.