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Thompson A, Fan MY, Unützer J, Katon W.Thompson A, et al. Among authors: fan my.Int J Geriatr Psychiatry. 2008 May;23(5):511-6. doi: 10.1002/gps.1929.Int J Geriatr Psychiatry. 2008.PMID: 17944005Free PMC article.
Sullivan MD, Edlund MJ, Fan MY, DeVries A, Braden JB, Martin BC.Sullivan MD, et al. Among authors: fan my.Pain. 2008 Aug 31;138(2):440-449. doi: 10.1016/j.pain.2008.04.027. Epub 2008 Jun 10.Pain. 2008.PMID: 18547726Free PMC article.