Funding for this research was provided by:
Ministero dell’Istruzione, dell’Università e della Ricerca (MIUR-PRIN numbers prot. 2008B4J2HS and 2010EL8TXP)
Text and Data Mining valid from 2018-03-03
Received: 13 November 2017
Accepted: 7 February 2018
First Online: 3 March 2018
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: MIUR-PRIN numbers prot. 2008B4J2HS and 2010EL8TXP allotted to Olga Rickards.