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Fang A, Sawyer AT, Asnaani A, Hofmann S.Fang A, et al. Among authors: sawyer at.Cogn Behav Pract. 2013 May 1;20(2):213-220. doi: 10.1016/j.cbpra.2012.05.003.Cogn Behav Pract. 2013.PMID: 25419100Free PMC article.