| Affiliation: | 1. Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta, Georgia, USA;2. Air Pollution and Respiratory Health Branch, Division of Environmental Hazards and Health Effects, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, Georgia, USA;3. Environmental Health Sciences Program, Rollins School of Public Health/Laney Graduate School, Emory University, Atlanta, Georgia, USA;4. Air Pollution and Respiratory Health Branch, Division of Environmental Hazards and Health Effects, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, Georgia, USA |
