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.
Norris T, Johnson W, Petherick E, Cameron N, Oddie S, Johnson S, Wright J, Draper E, Baker PN.Norris T, et al. Among authors: johnson w, johnson s.Int J Epidemiol. 2018 Oct 1;47(5):1475-1484. doi: 10.1093/ije/dyy157.Int J Epidemiol. 2018.PMID: 30060064Free PMC article.
Hawley NL, Rousham EK, Johnson W, Norris SA, Pettifor JM, Cameron N.Hawley NL, et al. Among authors: johnson w.Bone. 2012 Jan;50(1):259-64. doi: 10.1016/j.bone.2011.10.029. Epub 2011 Oct 30.Bone. 2012.PMID: 22075209Free article.
Santorelli G, Petherick ES, Wright J, Wilson B, Samiei H, Cameron N, Johnson W.Santorelli G, et al. Among authors: johnson w.PLoS One. 2013 Aug 7;8(8):e71183. doi: 10.1371/journal.pone.0071183. Print 2013.PLoS One. 2013.PMID: 23940713Free PMC article.