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Bermejo-Alvarez P, Rizos D, Rath D, Lonergan P, Gutierrez-Adan A.Bermejo-Alvarez P, et al.Proc Natl Acad Sci U S A. 2010 Feb 23;107(8):3394-9. doi: 10.1073/pnas.0913843107. Epub 2010 Feb 4.Proc Natl Acad Sci U S A. 2010.PMID: 20133684Free PMC article.