1. Department of Health Statistics Key Laboratory of Medicine and Health of Shandong Province School of Public Health Weifang Medical University Weifang China
2. Tianjin Cancer Institute, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy of Tianjin Tianjin Medical University Cancer Institute and Hospital Tianjin China
3. Department of Epidemiology and Biostatistics, National Clinical Research Center for Cancer, Key Laboratory of Molecular Cancer Epidemiology of Tianjin Tianjin Medical University Cancer Institute and Hospital Tianjin China