1. State Key Laboratory of Biocontrol, Department of Biochemistry, School of Life Sciences; Sun Yat-sen (Zhongshan) University; Guangzhou; China
2. Department of Cancer Epidemiology, Cancer Institute; Peking Union Medical College/Chinese Academy of Medical Sciences; Beijing; China
3. Department of Pathology, Cancer Institute; Peking Union Medical College/Chinese Academy of Medical Sciences; Beijing; China
4. Department of Epidemiology; University of Washington; Seattle; Washington
5. Merck Sharp & Dohme (China); Shanghai; China