Pradeep S Prathibha, Washington University in St Louis, St. Louis, MO, United States, Ray A Yeager II, University of Louisville, Environmental and Occupational Health Sciences, Louisville, KY, United States, Steve Hankey, Virginia Polytechnic Institute and State University, Urban Affairs and Planning, Blacksburg, VA, United States, Jason G Su, University of California Berkeley, Environmental Health Sciences, Berkeley, CA, United States, Richard L Strehl, University of Louisville, Louisville, KY, United States, Aruni Bhatnagar, University of Louisville, Environmental Health Institute, Louisville, KY, United States, Eben Cross, Aerodyne Research Inc., Billerica, MA, United States and Jay Robert Turner, Washington University in St Louis, Department of Energy, Environmental and Chemical Engineering, St. Louis, MO, United States