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Gschwend FJ, Brandt A, Chambon CL, Tu WC, Weigand L, Hallett JP.Gschwend FJ, et al. Among authors: hallett jp.J Vis Exp. 2016 Aug 10;(114):54246. doi: 10.3791/54246.J Vis Exp. 2016.PMID: 27583830Free PMC article.