About the Authors

Juan Liu

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

Guoqing Han

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

Hui Liu

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

Chengyong Qin

qchengyong@yahoo.cn

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

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CQ. Performed the experiments: JL HL CQ. Analyzed the data: CQ JL GH. Contributed reagents/materials/analysis tools: JL GH HL. Wrote the paper: CQ JL.