1. Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA, USA
2. Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Department of Health and Human Service, Rockville, MD, USA
3. Division of Environmental Epidemiology, Institute for Risk Assessment Sciences, Utrecht University, TD Utrecht, The Netherlands
4. National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China