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Ofili EO, Cohen JD, St Vrain JA, Pearson A, Martin TJ, Uy ND, Castello R, Labovitz AJ.Ofili EO, et al.JAMA. 1998 Mar 11;279(10):778-80. doi: 10.1001/jama.279.10.778.JAMA. 1998.PMID: 9508155Clinical Trial.