Funding for this research was provided by:
Università degli Studi di Bergamo
Article History
Accepted: 8 September 2020
First Online: 8 October 2020
Compliance with ethical standards
:
: Elena Cefis has received research grants from the University of Bergamo, Dept. of Management, Economics, and Quantitative Methods, Bergamo, Italy: grants n. 60CEFI18 and n. 60CEFI19.The authors declare that they have no conflict of interest.