1. Paul M. Rady Department of Mechanical Engineering, University of Colorado at Boulder, Boulder, Colorado 80309, United States
2. SafeTraces, Inc., Pleasanton, California 94588, United States
3. Stanford University School of Medicine, Stanford, California 94305, United States
4. Independent researcher, Atlanta, Georgia 30333, United States
5. School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, Arizona 85281, United States
6. The Biodesign Institute Center for Environmental Health Engineering, Arizona State University, Tempe, Arizona 85281, United States