About the Authors

Haitao Pan

Contributed equally to this work with: Haitao Pan, Cailin Zhu, Feng Zhang

Affiliation School of Statistics, Xi'an University of Finance and Economics, Xi'an, China

Cailin Zhu

Contributed equally to this work with: Haitao Pan, Cailin Zhu, Feng Zhang

Affiliation Department of Gastrointestinal Surgery, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China

Feng Zhang

Contributed equally to this work with: Haitao Pan, Cailin Zhu, Feng Zhang

Affiliation Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China

Ying Yuan

Affiliation Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America

Shemin Zhang

Affiliation School of Statistics, Xi'an University of Finance and Economics, Xi'an, China

Wenhong Zhang

Affiliation School of Statistics, Xi'an University of Finance and Economics, Xi'an, China

Chanjuan Li

jielaixia@yahoo.com (JX); medstat@gmail.com (LW); chanjuanli@sohu.com (CL)

Affiliation Department of Health Statistics, Fourth Military Medical University, Xi'an, China

Ling Wang

jielaixia@yahoo.com (JX); medstat@gmail.com (LW); chanjuanli@sohu.com (CL)

Affiliation Department of Health Statistics, Fourth Military Medical University, Xi'an, China

Jielai Xia

jielaixia@yahoo.com (JX); medstat@gmail.com (LW); chanjuanli@sohu.com (CL)

Affiliation Department of Health Statistics, Fourth Military Medical University, Xi'an, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HP CZ FZ YY. Performed the experiments: HP SZ WZ LW CL JX. Analyzed the data: HP CZ FZ SZ WZ LW CL JX. Contributed reagents/materials/analysis tools: HP SZ WZ LW CL JX. Wrote the paper: HP JX.