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.
Bayley PJ, Kong JY, Helmer DA, Schneiderman A, Roselli LA, Rosse SM, Jackson JA, Baldwin J, Isaac L, Nolasco M, Blackman MR, Reinhard MJ, Ashford JW, Chapman JC; MIND Study Group.Bayley PJ, et al. Among authors: schneiderman a.BMC Med Res Methodol. 2014 Apr 8;14:48. doi: 10.1186/1471-2288-14-48.BMC Med Res Methodol. 2014.PMID: 24713131Free PMC article.