1. George Washington University Milken Institute School of Public Health Washington DC USA
2. Boston University School of Public Health Boston MA USA
3. District of Columbia Department of Health Office of Health Equity Washington DC USA
4. District of Columbia Department of Energy & Environment Air Quality Division Washington DC USA
5. Department of Physics and Atmospheric Science Dalhousie University Halifax NS Canada
6. Center for Aerosol Science and Engineering Washington University in St. Louis St. Louis MO USA