1. Department of Epidemiology and Population Health Albert Einstein College of Medicine Bronx New York USA
2. Division of Cancer Epidemiology and Genetics National Cancer Institute Bethesda Maryland USA
3. Guangdong Poison Control Center Guangzhou China
4. Hunan Prevention and Treatment Institute for Occupational Diseases Changsha Hunan China
5. Division of Environmental Health Sciences School of Public Health, University of California, Berkeley Berkeley California USA
6. School of Public Health, University of California, Berkeley Berkeley California USA
7. Department of IRAS Utrecht University Utrecht The Netherlands