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Additional Information

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

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

Shuangsuo Dang performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, reviewed drafts of the paper.

Fanpu Ji performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, reviewed drafts of the paper.

Xiongxiong Bao performed the experiments, reviewed drafts of the paper.

Wenjun Wang 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.

Data Deposition

The following information was supplied regarding data availability:

The raw data can be downloaded from Google Trends.

Funding

The authors received no funding for this work.


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