1. Department of Epidemiology; School of Public Health; Guangxi Medical University; 22 Shuangyong Road Nanning Guangxi 530021 China
2. Affiliated Tumor Hospital of Guangxi Medical University; 71 Hedi Road Nanning Guangxi 530021 China
3. Shenzhen Longhua Center for Chronic Diseases Prevention and Control; 118 Guanlan Road Shenzhen Guangdong 518110 China
4. GuangXi Center for Disease Prevention and Control; 18 Jinzhou Road Nanning Guangxi 530021 China
5. Medical Scientific Research Centre; Guangxi Medical University; 22 Shuangyong Road Nanning Guangxi 530021 China