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Garland EL, Fredrickson B, Kring AM, Johnson DP, Meyer PS, Penn DL.Garland EL, et al. Among authors: penn dl.Clin Psychol Rev. 2010 Nov;30(7):849-64. doi: 10.1016/j.cpr.2010.03.002. Epub 2010 Mar 12.Clin Psychol Rev. 2010.PMID: 20363063Free PMC article.Review.
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Johnson DP, Penn DL, Fredrickson BL, Kring AM, Meyer PS, Catalino LI, Brantley M.Johnson DP, et al. Among authors: penn dl.Schizophr Res. 2011 Jul;129(2-3):137-40. doi: 10.1016/j.schres.2011.02.015. Epub 2011 Mar 8.Schizophr Res. 2011.PMID: 21385664Clinical Trial.
Buck B, Ludwig K, Meyer PS, Penn DL.Buck B, et al. Among authors: penn dl.Psychiatry Res. 2014 Jul 30;217(3):233-9. doi: 10.1016/j.psychres.2014.03.014. Epub 2014 Mar 25.Psychiatry Res. 2014.PMID: 24726270Free PMC article.
Green MF, Penn DL, Bentall R, Carpenter WT, Gaebel W, Gur RC, Kring AM, Park S, Silverstein SM, Heinssen R.Green MF, et al. Among authors: penn dl.Schizophr Bull. 2008 Nov;34(6):1211-20. doi: 10.1093/schbul/sbm145. Epub 2008 Jan 8.Schizophr Bull. 2008.PMID: 18184635Free PMC article.
Harper Romeo K, Meyer PS, Johnson D, Penn DL.Harper Romeo K, et al. Among authors: penn dl.J Ment Health. 2014 Aug;23(4):166-70. doi: 10.3109/09638237.2013.869568.J Ment Health. 2014.PMID: 25054367