Pierri, Francesco http://orcid.org/0000-0002-9339-7566
Piccardi, Carlo http://orcid.org/0000-0002-8373-539X
Ceri, Stefano http://orcid.org/0000-0003-0671-2415
Article History
Received: 30 June 2019
Accepted: 8 January 2020
First Online: 28 January 2020
Competing interests
: The authors declare no competing interests.