1. All of the authors are with the Department of Environmental and Occupational Health Sciences, School of Public Health and the Center for Health and the Global Environment, University of Washington, Seattle. Nicole A. Errett is also with the Department of Health Services, School of Public Health, University of Washington, Seattle. Kristie L. Ebi and Jeremy J. Hess are also with the Department of Global Health, Schools of Medicine and Public Health, University of Washington, Seattle.