1. Department of Environmental Engineering Sciences, College of Engineering, University of Florida, Gainesville, Florida, USA
2. Department of Environmental and Public Health Sciences, College of Medicine, University of Cincinnati, Ohio, USA
3. Aerosol Dynamics Inc, Berkeley, California, USA
4. Department of Environmental and Global Health, College of Public Health and Health Professions, University of Florida, Gainesville, Florida, USA
5. Emerging Pathogens Institute, University of Florida, Gainesville, Florida, USA
6. Department of Chemical, Environmental, and Materials Engineering, University of Miami, Coral Gables, Florida, USA