About the Authors

Yangkai Li

Affiliation Department of Epidemiology, the University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America

Zhensheng Liu

Affiliation Department of Epidemiology, the University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America

Hongliang Liu

Affiliation Department of Epidemiology, the University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America

Li-E Wang

Affiliation Department of Epidemiology, the University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America

Dongfeng Tan

Affiliation Department of Pathology, the University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America

Jaffer A. Ajani

Affiliation Department of Gastrointestinal Medical Oncology, the University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America

Qing-Yi Wei

qwei@mdanderson.org

Affiliation Department of Epidemiology, the University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YL ZL QW. Performed the experiments: YL ZL. Analyzed the data: YL HL LEW QW. Contributed reagents/materials/analysis tools: YL ZL HL LEW DT JAA. Wrote the paper: YL QW ZL HL LEW DT JAA.