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St Pierre S, Gustus C, Steffenson B, Dill-Macky R, Smith KP.St Pierre S, et al.Phytopathology. 2010 Jan;100(1):80-4. doi: 10.1094/PHYTO-100-1-0080.Phytopathology. 2010.PMID: 19968552Free article.