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Mackey MA, Ali MR, Austin LA, Near RD, El-Sayed MA.Mackey MA, et al.J Phys Chem B. 2014 Feb 6;118(5):1319-26. doi: 10.1021/jp409298f. Epub 2014 Jan 23.J Phys Chem B. 2014.PMID: 24433049Free PMC article.