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.
Cummins S, Smith DM, Taylor M, Dawson J, Marshall D, Sparks L, Anderson AS.Cummins S, et al. Among authors: smith dm.Public Health Nutr. 2009 Nov;12(11):2044-50. doi: 10.1017/S1368980009004984. Epub 2009 Feb 26.Public Health Nutr. 2009.PMID: 19243676
Smith D, Cummins S, Clark C, Stansfeld S.Smith D, et al.BMC Public Health. 2013 Jan 24;13:70. doi: 10.1186/1471-2458-13-70.BMC Public Health. 2013.PMID: 23347757Free PMC article.
Mathur R, Schofield P, Smith D, Gilkes A, White P, Hull S.Mathur R, et al.ERJ Open Res. 2017 Mar 22;3(1):00130-2016. doi: 10.1183/23120541.00130-2016. eCollection 2017 Jan.ERJ Open Res. 2017.PMID: 28435842Free PMC article.