1. National Center for Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, USA
2. School of Public Health, Rutgers University, Piscataway, New Jersey, USA
3. ICF International, Fairfax, Virginia USA
4. School of Architecture, The University of Texas at Austin, Austin, Texas, USA
5. Office of Air Quality Planning and Standards, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, USA