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Parfrey LW, Lahr DJ, Knoll AH, Katz LA.Parfrey LW, et al. Among authors: katz la.Proc Natl Acad Sci U S A. 2011 Aug 16;108(33):13624-9. doi: 10.1073/pnas.1110633108. Epub 2011 Aug 2.Proc Natl Acad Sci U S A. 2011.PMID: 21810989Free PMC article.
Katz LA, Grant J, Parfrey LW, Gant A, O'Kelly CJ, Anderson OR, Molestina RE, Nerad T.Katz LA, et al.Protist. 2011 Nov;162(5):762-73. doi: 10.1016/j.protis.2011.05.002. Epub 2011 Jul 1.Protist. 2011.PMID: 21723191