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Henry-Okafor Q, Cowan PA, Wicks MN, Rice M, Husch DS, Khoo MS.Henry-Okafor Q, et al. Among authors: cowan pa.Biol Res Nurs. 2012 Apr;14(2):171-9. doi: 10.1177/1099800411405031. Epub 2011 May 17.Biol Res Nurs. 2012.PMID: 21586497