About the Authors

Davide Chiarugi
Dipartimento di Matematica e Informatica, Università di Siena, Siena, Italy

Pierpaolo Degano, Roberto Marangoni
Dipartimento di Informatica, Università di Pisa, Pisa, Italy

Corresponding Author


Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

We warmly thank the referees for their invaluable suggestions and comments. DC and RM conceived and designed the experiments. DC performed the experiments. DC, PD, and RM analyzed the data and wrote the paper.