1. Center
for Nanotechnology and Nanotoxicology Center, Harvard T. H. Chan School of Public Health, Boston, Massachusetts 02115, United States
2. Laboratory
of Applied Microbiology, Harvard School of Engineering and Applied
Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
3. European University Cyprus, The School of Sciences, Nicosia 1516, Cyprus
4. Department
of Environmental Sciences, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08901, United States