García-Rodríguez, José Francisco http://orcid.org/0000-0003-2699-2450
Valcarce-Pardeiro, N.
Álvarez-Díaz, H.
Mariño-Callejo, A.
Article History
Received: 28 May 2019
Accepted: 17 July 2019
First Online: 3 August 2019
Compliance with ethical standards
: The study has been approved by the institutional research ethics committee and has been carried out in accordance with the ethical standards established in the Declaration of Helsinki of 1964. The informed consent of all the individual participants included in the study was obtained.
: The authors declare that they have no competing interests.