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Kovacs GT, Westcott M, Rusden J, Asche V, King H, Haynes SE, Moore EK, Hall BE.Kovacs GT, et al.Med J Aust. 1989 May 1;150(9):483-5. doi: 10.5694/j.1326-5377.1989.tb136591.x.Med J Aust. 1989.PMID: 2725404Clinical Trial.