Funding for this research was provided by:
Instituto de Salud Carlos III (PI15/01613)
Text and Data Mining valid from 2018-07-31
Received: 12 March 2018
Accepted: 17 July 2018
First Online: 31 July 2018
Ethics approval and consent to participate
: The Independent Ethics Committee at the Fundació Unio Catalana Hospitals in Barcelona, Spain has approved the trial study protocol. The trial has also been registered on the Clinical.ExternalRef removedregister NCT03215654 (date registration July 12, 2017).Written informed consent of the parents and guardians of all students participating in the study will be requested.
: Not applicable
: The authors declare that they have no competing interests.
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