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Eichner JE, Cauley JA, Ferrell RE, Cummings SR, Kuller LH.Eichner JE, et al. Among authors: cauley ja.Genet Epidemiol. 1992;9(3):177-84. doi: 10.1002/gepi.1370090304.Genet Epidemiol. 1992.PMID: 1521779Clinical Trial.