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.
Liu W, Lynne-Landsman SD, Petras H, Masyn K, Ialongo N.Liu W, et al. Among authors: petras h.Prev Sci. 2013 Jun;14(3):206-17. doi: 10.1007/s11121-013-0375-9.Prev Sci. 2013.PMID: 23475538
Schaeffer CM, Petras H, Ialongo N, Masyn KE, Hubbard S, Poduska J, Kellam S.Schaeffer CM, et al. Among authors: petras h.J Consult Clin Psychol. 2006 Jun;74(3):500-10. doi: 10.1037/0022-006X.74.3.500.J Consult Clin Psychol. 2006.PMID: 16822107Free article.
Wilcox HC, Petras H, Brown HC, Kellam SG.Wilcox HC, et al. Among authors: petras h.Prev Sci. 2022 Aug;23(6):907-921. doi: 10.1007/s11121-022-01334-y. Epub 2022 Mar 1.Prev Sci. 2022.PMID: 35230615
Scott DM, Petras H, Kalu N, Cain GE, Johnson DB, Sloboda Z, Taylor RE.Scott DM, et al. Among authors: petras h.Prev Sci. 2020 Oct;21(7):972-978. doi: 10.1007/s11121-020-01154-y.Prev Sci. 2020.PMID: 32803463Free PMC article.No abstract available.
Liu W, Mumford EA, Petras H.Liu W, et al. Among authors: petras h.Prev Sci. 2015 Apr;16(3):353-63. doi: 10.1007/s11121-014-0522-y.Prev Sci. 2015.PMID: 25344349Free PMC article.