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Additional Information

Competing Interests

The authors declare they have no competing interests.

Author Contributions

Ziyun Xu conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables, performed the computation work, reviewed drafts of the paper, data collection and funding for this research project.

Leonid B Pekelis conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, performed the computation work, reviewed drafts of the paper.

Funding

There was no external funding for this project. All the financial resources needed to carry out this research were contributed by one of the authors, Ziyun Xu.


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