Published on in Vol 10, No 5 (2021): May
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/29084, first published
.
1 Center for the Acceleration of Harm Reduction, University of Catania, Catania, Italy
2 Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy