Erasun, Diego
Alonso-Molero, Jéssica http://orcid.org/0000-0002-1939-8798
Gómez-Acebo, Inés
Dierssen-Sotos, Trinidad
Llorca, Javier
Schneider, José
Article History
Received: 9 September 2020
Accepted: 8 December 2020
First Online: 6 January 2021
Ethics approval and consent to participate
: As the study does not include data on individuals but aggregated data on countries, the approval of an ethics committee was not necessary.
: Not applicable
: The authors declare no conflict of interest.