1. Department of Preventive Medicine, School of Public Health, Fujian Medical University, Fuzhou, Fujian Province 350122, China
2. The Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Fuzhou, Fujian Province 350122, China
3. Public Technology Service Center, Fujian Medical University, Fuzhou, Fujian Province 350122, China
4. Medical Genetic Diagnosis and Therapy Center, Fujian Maternity and Child Health Hospital College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, Fujian Province 350001, China
5. Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fuzhou, Fujian Province 350122, China
6. Department of Epidemiology and Population Health, School of Public Health and Information Sciences, University of Louisville, 485 E. Gray Street, Louisville, Kentucky 40292, United States