1. Department of Epidemiology, School of Public Health, University of Washington, Seattle, Washington, USA;
2. School of Public Health, Oregon Health and Sciences University–Portland State University, Portland, Oregon, USA
3. Department of Kinesiology and Nutrition, College of Applied Health Sciences, University of Illinois Chicago, Chicago, Illinois, USA
4. Department of Behavioral, Social and Health Education Sciences, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
5. Division of Occupational and Environmental Health, Department of Family and Preventive Medicine, School of Medicine, University of Utah, Salt Lake City, Utah, USA