1. Department
of Civil, Architectural and Environmental Engineering, University of Texas, 301 E. Dean Keeton St., Stop C1700, Austin, Texas 78712, United States
2. Department
of Civil, Environmental, and Geo- Engineering, University of Minnesota, 500 Pillsbury Drive SE, Minneapolis, Minnesota 55455, United States
3. Health Effects Institute, Suite
500, 101 Federal Street, Boston, Massachusetts 02110, United States
4. School
of Population and Public Health, The University of British Columbia, 2206 East Mall, Vancouver, British Columbia V6T1Z3, Canada