Funding for this research was provided by:
Hrvatska Zaklada za Znanost (HRZZ-I-2238-2016, HRZZ-IP-2013-11-4126)
Received: 20 March 2020
Accepted: 26 April 2020
First Online: 4 May 2020
Ethics approval and consent to participate
: In this study we analyzed only data from publicly available published articles; for this reason, ethic approval and consent of participants to participate are not applicable.
: Not applicable.