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Kessler RC, McGonagle KA, Zhao S, Nelson CB, Hughes M, Eshleman S, Wittchen HU, Kendler KS.Kessler RC, et al.Arch Gen Psychiatry. 1994 Jan;51(1):8-19. doi: 10.1001/archpsyc.1994.03950010008002.Arch Gen Psychiatry. 1994.PMID: 8279933