Proceedings of the National Academy of Sciences of the United States of America (2010) - Comments
pubmed: 20231439  doi: 10.1073/pnas.0912839107  issn: 1091-6490  issn: 0027-8424 

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Robert P. Ryan, Yvonne McCarthy, Maxuel Andrade, Chuck S. Farah, Judith P. Armitage, J. Maxwell Dow