Affiliation: | 1. Department of Medicine, University of Minnesota School of Medicine, Minneapolis, Minnesota;2. Division of Environmental Health Sciences, University of Minnesota School of Public Health, Minneapolis, Minnesota;3. Kaiser Permanente, Oakland, California;4. Division of Epidemiology and Community Health, University of Minnesota School of Public Health, Minneapolis, Minnesota;5. Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland |