1. Department of Epidemiology, University of Washington, Seattle, WA, USA,
2. Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
3. Department of Environmental Health Sciences, University of Michigan, Ann Arbor, MI, USA,
4. Department of Occupational and Environmental Medicine, Yale University, New Haven, CT, USA,
5. Alcoa, Inc., Pittsburgh, PA, USA, and