Barbolla Benito, Pedro http://orcid.org/0000-0002-6297-8317
Peces-Barba Romero, Germán
Article History
Received: 13 June 2018
Accepted: 25 October 2018
First Online: 7 November 2018
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.