Office of Cancer Screening, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Cancer Centre - Office of Cancer Screening, Office of Cancer Screening, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Office of Cancer Screening, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Cancer Centre - Office of Cancer Screening, State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Huazhong University of Science and Technology - Department of Epidemiology and Biostatistics, affiliation not provided to SSRN and Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC) - National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital