Proceedings of the National Academy of Sciences (2009) - Comments
pubmed: 19666578  doi: 10.1073/pnas.0813327106  issn: 1091-6490  issn: 0027-8424 

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Cristina L. Zavaleta, Bryan R. Smith, Ian Walton, William Doering, Glenn Davis, Borzoyeh Shojaei, Michael J. Natan, Sanjiv S. Gambhir