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Supplemental Information

Additional Information

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Nobuyuki Sano conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables.

Makoto Kyougoku conceived and designed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, reviewed drafts of the paper.

Human Ethics

The following information was supplied relating to ethical approvals (i.e., approving body and any reference numbers):

It was conducted in accordance with the Declaration of Helsinki and was approved by the Ethics Committee of the Kibi International University (No. 13-34). In addition, we gained approval from the facility directors of the institutions that cooperated in this study. We explained to participants that they could freely decide whether to participate in the study and had the right to refuse to answer the questionnaire during the study. We completely protected the privacy of personal information. Furthermore, we obtained written informed consent from all participants.

Data Deposition

The following information was supplied regarding data availability:

The raw data has been supplied as a supplementary file.

Funding

The authors received no funding for this work.


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