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Ni N, Lozano-Perez S, Sykes J, Grovenor C.Ni N, et al.Ultramicroscopy. 2011 Jan;111(2):123-30. doi: 10.1016/j.ultramic.2010.10.020. Epub 2010 Nov 7.Ultramicroscopy. 2011.PMID: 21185456