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Richardson LP, Fan MY, McCarty CA, Katon W, Edlund M, DeVries A, Martin BC, Sullivan M.Richardson LP, et al. Among authors: katon w.Gen Hosp Psychiatry. 2011 Sep-Oct;33(5):423-8. doi: 10.1016/j.genhosppsych.2011.04.009. Epub 2011 May 31.Gen Hosp Psychiatry. 2011.PMID: 21749839Free PMC article.