Funding for this research was provided by:
Agencia Estatal de Investigación (PSI2016-80575-R)
Ministerio de Educación, Cultura y Deporte (BOE-B-2017-2646)
European Union, DGSANCO (SANCO/2014/C2/035)
First Online: 12 October 2019
Change Date: 28 November 2019
Change Type: Correction
Change Details: The original version of this article unfortunately contained a mistake in one of the co-author’s family name. The correct name should be María Victoria Martín-Cilleros instead of María Victoria Cilleros-Martín.
Compliance with Ethical Standards
: The authors have no conflict of interest to declare.
: Ethical approval was given by the Research Ethics Committee of the University of Salamanca, Spain (201700008785).