About the Authors

Hongping Yu

yuhongping@hotmail.com (HY); qwei@mdanderson.org (QW)

Affiliations Department of Epidemiology and Biostatistics, School of Public Health, Guiling Medical University, Guilin, China, Department of Epidemiology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America

Hui Zhao

Affiliation Department of Epidemiology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America

Li-E Wang

Affiliation Department of Epidemiology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America

Zhensheng Liu

Affiliation Department of Epidemiology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America

Donghui Li

Affiliation Department of Gastrointestinal Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America

Qingyi Wei

yuhongping@hotmail.com (HY); qwei@mdanderson.org (QW)

Affiliation Department of Epidemiology, The University of Texas M.D. 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: LW QW. Performed the experiments: DL ZL. Analyzed the data: HZ HY. Contributed reagents/materials/analysis tools: QW. Wrote the paper: HY.