Published on in Vol 3, No 2 (2020): Jul-Dec
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/20310, first published
.
1 Centre for Socio-Economic Research on Ageing, Italian National Institute of Health & Science on Ageing, Ancona, Italy
2 Department of Economics and Social Sciences, Faculty of Economics “Giorgio Fuà”, Università Politecnica delle Marche, Ancona, Italy