Funding for this research was provided by:
Ministerio de Economía y Competitividad (FEM2015-63912-P)
Agencia Estatal de Investigación (FEM2015-63912-P)
European Regional Development Fund (FEM2015-63912-P)
Received: 26 February 2020
Accepted: 1 November 2020
First Online: 10 November 2020
Ethics approval and consent to participate
: The study materials and consent forms have been developed in accordance with ethical norms and guidelines from all participating countries and universities. The study was approved by the Ethics Research Committee (University of Balearic Islands, Spain).
: The authors declare that they have no competing interests.