1. Program in Environmental and Occupational Health, Oregon State University College of Public Health and Human Sciences, Corvallis, Oregon, USA
2. Program in Epidemiology, Oregon State University College of Public Health and Human Sciences, Corvallis, Oregon, USA
3. Program in Ocean Ecology and Biogeochemistry, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, Oregon, USA
4. Western States Division, National Institute for Occupational Safety and Health, Anchorage, Alaska, USA