Funding for this research was provided by:
Dipartimento della Protezione Civile, Presidenza del Consiglio dei Ministri (E56D16000670005)
Article History
Received: 5 November 2018
Accepted: 25 March 2019
First Online: 3 April 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.