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Kellam SG, Brown CH, Poduska JM, Ialongo NS, Wang W, Toyinbo P, Petras H, Ford C, Windham A, Wilcox HC.Kellam SG, et al. Among authors: petras h.Drug Alcohol Depend. 2008 Jun 1;95 Suppl 1(Suppl 1):S5-S28. doi: 10.1016/j.drugalcdep.2008.01.004. Epub 2008 Mar 17.Drug Alcohol Depend. 2008.PMID: 18343607Free PMC article.Clinical Trial.
Furr-Holden CD, Ialongo NS, Anthony JC, Petras H, Kellam SG.Furr-Holden CD, et al. Among authors: petras h.Drug Alcohol Depend. 2004 Feb 7;73(2):149-58. doi: 10.1016/j.drugalcdep.2003.10.002.Drug Alcohol Depend. 2004.PMID: 14725954Clinical Trial.
Wang Y, Browne DC, Petras H, Stuart EA, Wagner FA, Lambert SF, Kellam SG, Ialongo NS.Wang Y, et al. Among authors: petras h.Drug Alcohol Depend. 2009 Mar 1;100(3):194-203. doi: 10.1016/j.drugalcdep.2008.08.020. Epub 2008 Dec 6.Drug Alcohol Depend. 2009.PMID: 19059736Free PMC article.Clinical Trial.
Wang Y, Storr CL, Green KM, Zhu S, Stuart EA, Lynne-Landsman SD, Clemans KH, Petras H, Kellam SG, Ialongo NS.Wang Y, et al. Among authors: petras h.Drug Alcohol Depend. 2012 Jan 1;120(1-3):202-8. doi: 10.1016/j.drugalcdep.2011.07.022. Epub 2011 Aug 24.Drug Alcohol Depend. 2012.PMID: 21868176Free PMC article.Clinical Trial.
Schaeffer CM, Petras H, Ialongo N, Poduska J, Kellam S.Schaeffer CM, et al. Among authors: petras h.Dev Psychol. 2003 Nov;39(6):1020-35. doi: 10.1037/0012-1649.39.6.1020.Dev Psychol. 2003.PMID: 14584982
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.