Tovar, Mario http://orcid.org/0000-0003-0537-3650
Aleta, Alberto http://orcid.org/0000-0002-1192-8707
Sanz, Joaquín
Moreno, Yamir http://orcid.org/0000-0002-0895-1893
Article History
Received: 30 November 2021
Accepted: 16 June 2022
First Online: 29 June 2022
Competing interests
: The authors declare no competing interests.
: The Declaration of Helsinki refers to “research on identifiable human material and data”. This study does not use any individual human data. The public, aggregated statistics used in the study cannot be de-identified. Therefore, no ethics approval was needed.