About the Authors

Min-Shan Lu

Contributed equally to this work with: Min-Shan Lu, Yu-Jing Fang

Affiliation Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China

Yu-Jing Fang

Contributed equally to this work with: Min-Shan Lu, Yu-Jing Fang

Affiliation Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China

Zhi-Zhong Pan

Affiliation Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China

Xiao Zhong

Affiliation Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China

Mei-Chun Zheng

Affiliation Department of Colorectal Surgery, Sun Yat-sen University Cancer Center, Guangzhou, China

Yu-Ming Chen

zhangcx3@mail.sysu.edu.cn (CXZ); chenyum@mail.sysu.edu.cn (YMC)

Affiliation Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China

Cai-Xia Zhang

zhangcx3@mail.sysu.edu.cn (CXZ); chenyum@mail.sysu.edu.cn (YMC)

Affiliation Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MSL CXZ. Performed the experiments: MSL XZ. Analyzed the data: MSL CXZ. Contributed reagents/materials/analysis tools: YMC. Wrote the paper: MSL CXZ YMC. Responsible for connecting and coordinating the field work: YJF ZZP MCZ.