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Hugo CJ, Boshoff DE, Traut A, Zungu-Dirwayi N, Stein DJ.Hugo CJ, et al. Among authors: stein dj.Soc Psychiatry Psychiatr Epidemiol. 2003 Dec;38(12):715-9. doi: 10.1007/s00127-003-0695-3.Soc Psychiatry Psychiatr Epidemiol. 2003.PMID: 14689176