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. 2018 Oct 15;16(10):e05443. doi: 10.2903/j.efsa.2018.5443

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© 2018 European Food Safety Authority. EFSA Journal published by John Wiley and Sons Ltd on behalf of European Food Safety Authority.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited and no modifications or adaptations are made.

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Stem canker caused by Cronartium harknessii on lodgepole pine (Pinus contorta). Photo by Rocky Mountain Research Station, USDA, Forest Service, Bugwood.org. Available online: https://www.forestryimages.org/browse/detail.cfm?imgnum=1473029