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.
Richmond RL, Wilhelm KA, Indig D, Butler TG, Archer VA, Wodak AD.Richmond RL, et al. Among authors: indig d.BMC Public Health. 2011 Oct 10;11:783. doi: 10.1186/1471-2458-11-783.BMC Public Health. 2011.PMID: 21985524Free PMC article.Clinical Trial.
Indig D, Wodak AD, Richmond RL, Butler TG, Archer VA, Wilhelm KA.Indig D, et al.BMC Public Health. 2013 Dec 19;13:1200. doi: 10.1186/1471-2458-13-1200.BMC Public Health. 2013.PMID: 24354968Free PMC article.Clinical Trial.