Proceedings of the National Academy of Sciences (2015) - Comment
pubmed: 25675515  doi: 10.1073/pnas.1424684112  issn: 1091-6490  issn: 0027-8424 

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Danny Hung-Chieh Chou, Matthew J. Webber, Benjamin C. Tang, Amy B. Lin, Lavanya S. Thapa, David Deng, Jonathan V. Truong, Abel B. Cortinas, Robert Langer, Daniel G. Anderson