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Rogers LA, Stige LC, Olsen EM, Knutsen H, Chan KS, Stenseth NC.Rogers LA, et al. Among authors: olsen em.Proc Natl Acad Sci U S A. 2011 Feb 1;108(5):1961-6. doi: 10.1073/pnas.1010314108. Epub 2011 Jan 18.Proc Natl Acad Sci U S A. 2011.PMID: 21245301Free PMC article.