1. Department of Cancer Epidemiology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Beijing China
2. School of Health Policy and Management Chinese Academy of Medical Sciences & Peking Union Medical College Beijing China
3. Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics National Cancer Institute Rockville Maryland USA
4. Institute of Hepatopancreatobiliary Surgery Southwest Hospital, Third Military Medical University (Army Medical University) Chongqing China
5. Department of Clinical Nutrition Daping Hospital, Third Military Medical University (Army Medical University) Chongqing China
6. School of Population Medicine and Public Health Chinese Academy of Medical Sciences & Peking Union Medical College Beijing China