Plaza-Florido, Abel
Altmäe, Signe
Esteban, Francisco J.
Cadenas-Sanchez, Cristina
Aguilera, Concepción M.
Einarsdottir, Elisabet
Katayama, Shintaro
Krjutškov, Kaarel
Kere, Juha
Zaldivar, Frank
Radom-Aizik, Shlomit
Ortega, Francisco B.
Article History
Received: 7 July 2020
Revised: 18 September 2020
Accepted: 27 October 2020
First Online: 23 November 2020
Competing interests
: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
: The study was approved by the Committee for Research Involving Human Subjects at the University of Granada (Reference: 848, February 2014). All parents were informed about the study objective and written informed consent following the Declaration of Helsinki.