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Maier CA, Johnsen KH, Clinton BD, Ludovici KH.Maier CA, et al.New Phytol. 2010 Jan;185(2):502-13. doi: 10.1111/j.1469-8137.2009.03063.x. Epub 2009 Oct 29.New Phytol. 2010.PMID: 19878459Free article.