Funding for this research was provided by:
Dipartimento della Protezione Civile, Presidenza del Consiglio dei Ministri (not applicable)
Text and Data Mining valid from 2020-01-11
Received: 31 July 2019
Accepted: 24 December 2019
First Online: 11 January 2020
Compliance with ethical standards
: There are no conflict of interest to declare.