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Supplemental Information

raw data

The raw data of this paper

DOI: 10.7287/peerj.preprints.2049v1/supp-1

search strategy

search strategy of databases

DOI: 10.7287/peerj.preprints.2049v1/supp-2

The PRISMA checklist

The PRISMA checklist[b]

DOI: 10.7287/peerj.preprints.2049v1/supp-3

Additional Information

Competing Interests

The authors have no financial conflicts of interest to disclose.

Author Contributions

Yali Liu conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper, searched the data.

Yuchen Feng performed the experiments, analyzed the data, wrote the paper, prepared figures and/or tables, searched the data.

Lili Zhang performed the experiments, searched the data.

Xiaohuan Feng conceived and designed the experiments, performed the experiments.

Qin Feng performed the experiments.

JIngyi Luo performed the experiments.

Zhaodi Bai performed the experiments.

Haoyu Wu performed the experiments.

Xin Tian performed the experiments.

Yumin Li conceived and designed the experiments, contributed reagents/materials/analysis tools, reviewed drafts of the paper.

Data Deposition

The following information was supplied regarding data availability:

The raw data has been supplied as a Supplemental Dataset.


This study was supported by the National Natural Science Foundation of China (NCSF; grant number: 81101756), Foundation of Key Laboratory of Digestive System Tumors (grant number: lzujbky-2011-t03), Gansu Province; Fundamental Research Funds for the Central Universities. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

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