Funding for this research was provided by:
Generalitat de Catalunya (2017SGR001116)
Institut d'Estudis Catalans (PRO2017-S02VALLES)
Universitat de Barcelona (Predoctoral grant)
Spanish Government (CGL2017-84297-R, CSO2014-59704-P)
Received: 7 April 2020
Accepted: 28 May 2020
First Online: 9 June 2020
Ethics approval and consent to participate
: All the authors agree with the manuscript and consent to participate in it. Concerning the informants, they gave the informed consent (see the ‘InternalRef removed’ section).
: The authors give their consent for the publication of this manuscript.
: The authors declare that they have no competing interests.