1. Center for Bioengineering, Department of Chemical Engineering, University of California, Santa Barbara, California 93106, United States
2. Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
3. National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland 20892, United States
4. Cancer Science Institute of Singapore, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119077
5. Division of Oral Biology and Medicine, UCLA School of Dentistry, Los Angeles, California 90095, United States
6. Division of Molecular Pharmaceutics and Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
7. Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
8. Departments of Materials Engineering and Bioengineering, University of Tokyo, Tokyo 113-8654, Japan
9. Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
10. Laboratory for Nanoengineering & Drug Delivery, Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
11. Department of Materials, Department of Bioengineering, Institute for Biomedical Engineering, Imperial College London, London SW7 2AZ, U.K.
12. Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
13. The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30322, United States
14. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
15. Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, North Carolina 27695, United States
16. Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, North Carolina 27695, United States