1. School of Public Health China Medical University Shenyang 110122 China
2. Ministry of Education‐Shanghai Key Laboratory of Children's Environmental Health, School of Public Health Shanghai Jiao Tong University School of Medicine Shanghai 200025 China
3. Department of Biostatistics and Epidemiology, School of Public Health China Medical University No.77 Puhe Road Shenyang Liaoning Province 110122 China
4. Institute of Health Sciences, China Medical University No.77 Puhe Road Shenyang Liaoning Province 110122 China
5. Department of Health Statistics China Medical University Shenyang 110122 China
6. Department of Cardiology Shengjing Hospital of China Medical University Shenyang 110004 P. R. China