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Additional Information

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Davide Taibi wrote the paper, reviewed drafts of the paper.

Giuseppe Chiazzese wrote the paper, reviewed drafts of the paper.

Gianluca Merlo wrote the paper, reviewed drafts of the paper.

Luciano Seta wrote the paper, reviewed drafts of the paper.

Funding

This work has been carried out in the context of the WHAAM project funded with support of the European Commission. Reference project number: 531244-LLP-2012-IT-KA3MP The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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