1. Office of National Central Cancer Registry, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China
2. Key Laboratory of Carcinogenesis and Translational Research (MOE/Beijing), Division of Etiology Peking University Cancer Hospital and Institute Beijing China
3. Department of Epidemiology and Biostatistics, School of Public Health Xi'an Jiaotong University Health Science Center Xi'an China
4. Department of Pathology Peking University Cancer Hospital Beijing China
5. Department of Pathology Linzhou Cancer Hospital Linzhou China