Frutos Pérez-Surio, Alberto http://orcid.org/0000-0001-9962-3387
Lozano Ortíz, Roberto
Article History
First Online: 28 June 2019
Compliance with ethical standards
:
: No sources of funding were used to conduct this study or prepare this manuscript.
: A Frutos Pérez-Surio and R. Lozano Ortiz have no conflicts of interest that are directly relevant to the content of this letter.