1. Johns Hopkins University Bloomberg School of Public Health, Environmental Health and Engineering, Baltimore, MD, 21205-2103 USA
2. SEARCH (Solutions for Energy, Air, Climate and Health) Center, Yale University, New Haven, CT, 06520 USA
3. Chemical and Environmental Engineering, Yale University, New Haven, CT, 06520 USA
4. Johns Hopkins University Bloomberg School of Public Health, Department of Biostatistics, Baltimore, MD, 21205-2103 USA
5. Department of Public Health Sciences, UConn School of Medicine, University of Connecticut Health Center, Farmington, CT, USA 06032-1941