Funding for this research was provided by:
Università degli Studi di Padova (STPD11B8HM)
Text and Data Mining valid from 2018-12-06
Received: 30 July 2018
Accepted: 20 November 2018
First Online: 6 December 2018
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: All procedures performed were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments.
: Informed consent was obtained from all individual participants included in the study.