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.
Goldberg L, Elliot DL, MacKinnon DP, Moe EL, Kuehl KS, Yoon M, Taylor A, Williams J.Goldberg L, et al. Among authors: mackinnon dp.J Adolesc Health. 2007 Nov;41(5):421-9. doi: 10.1016/j.jadohealth.2007.08.001.J Adolesc Health. 2007.PMID: 17950161Clinical Trial.
MacKinnon DP, Fritz MS, Williams J, Lockwood CM.MacKinnon DP, et al.Behav Res Methods. 2007 Aug;39(3):384-9. doi: 10.3758/bf03193007.Behav Res Methods. 2007.PMID: 17958149Free PMC article.
Fritz MS, MacKinnon DP.Fritz MS, et al. Among authors: mackinnon dp.Behav Res Methods. 2008 Feb;40(1):55-60. doi: 10.3758/brm.40.1.55.Behav Res Methods. 2008.PMID: 18411527Free PMC article.