López de Frutos, Laura http://orcid.org/0000-0002-1369-6225
Cebolla, Jorge J. http://orcid.org/0000-0001-8727-9179
Aldámiz-Echevarría, Luis http://orcid.org/0000-0003-0687-6604
de la Vega, Ángela
Stanescu, Sinziana
Lahoz, Carlos
Irún, Pilar http://orcid.org/0000-0003-3392-7200
Giraldo, Pilar
Article History
Received: 27 August 2019
Accepted: 6 February 2020
First Online: 14 February 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study was conducted in accordance with the principles stated in the Declaration of Helsinki-Ethical Principles for Medical Research Involving Human Subjects, Helsinki, Finland, 1964, and as amended in Fortaleza, Brazil, 2013. The study design was approved by the institutional board of the FEETEG foundation.
: All guardians provided written informed consent.