Proceedings of the National Academy of Sciences of the United States of America (2008) - Comments
pubmed: 18227514  doi: 10.1073/pnas.0707594105  issn: 1091-6490  issn: 0027-8424 

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Robert F. Place, Long-Cheng Li, Deepa Pookot, Emily J. Noonan, Rajvir Dahiya