1. Center for Maritime Safety and Health Studies, National Institute for Occupational Safety and Health, Spokane, WA, USA,
2. College of Nursing and Health Sciences, Southeastern Louisiana University, Hammond, LA, USA
3. Departments of Medicine and Environmental and Occupational Sciences, University of Washington, Seattle, Washington, USA
4. College of Public Health and Human Sciences, Oregon State University, Corvallis, OR, USA
5. Western States Division, National Institute for Occupational Safety and Health, Anchorage, AK, USA