1. Clinical Research Academy, Peking University Shenzhen Hospital, Shenzhen, Guangdong Province, China
2. Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, Jilin Province, China
3. Department of Public Health and Preventive Medicine, Changzhi Medical College, Changzhi, Shanxi Province, China
4. Cancer Center of Inner Mongolia People's Hospital, Hohhot, Inner Mongolia, China
5. John Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
6. Department of Epidemiology, China Medical University, Shenyang, Liaoning Province, China
7. Department of Oncology, Peking University Shenzhen Hospital, Shenzhen, Guangdong Province, China