1. Department of Cancer Prevention Sun Yat‐sen University Cancer Center Guangzhou China
2. School of Public Health Sun Yat‐sen University Guangzhou China
3. Division of Cancer Epidemiology and Genetics National Cancer Institute Rockville Maryland USA
4. Cancer Research Institute of Zhongshan City Zhongshan Hospital of Sun Yat‐sen University Zhongshan China
5. Sihui Cancer Institute Sihui China
6. State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, and Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy Sun Yat‐Sen University Cancer Center Guangzhou China