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Buck-Sorlin G, de Visser PH, Henke M, Sarlikioti V, van der Heijden GW, Marcelis LF, Vos J.Buck-Sorlin G, et al.Ann Bot. 2011 Oct;108(6):1121-34. doi: 10.1093/aob/mcr190. Epub 2011 Aug 19.Ann Bot. 2011.PMID: 21856634Free PMC article.