1. National Central Cancer Registry Office, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China
2. Cancer Surveillance Branch International Agency for Research on Cancer Lyon France
3. Metabolic Epidemiology Branch/Division of Cancer Epidemiology & Genetics, National Cancer Institute National Institutes of Health Rockville Maryland USA
4. Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China