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.
Song Y, Preston J, Ogilvie D; iConnect consortium.Song Y, et al. Among authors: preston j.Transp Res Part A Policy Pract. 2017 Jan;95:320-333. doi: 10.1016/j.tra.2016.11.017.Transp Res Part A Policy Pract. 2017.PMID: 28163399Free PMC article.
Sahlqvist S, Song Y, Bull F, Adams E, Preston J, Ogilvie D; iConnect consortium.Sahlqvist S, et al. Among authors: preston j.BMC Med Res Methodol. 2011 May 6;11:62. doi: 10.1186/1471-2288-11-62.BMC Med Res Methodol. 2011.PMID: 21548947Free PMC article.Clinical Trial.