Lopes-Ferreira, Daniela
Ruiz-Pomeda, Alicia
Peréz-Sanchéz, Belén
Queirós, António
Villa-Collar, César
Funding for this research was provided by:
CooperVision S.L. Spain
Article History
Received: 9 June 2020
Accepted: 12 February 2021
First Online: 1 March 2021
<!--Emphasis Type='Bold' removed-->Ethics approval and consent to participate
: The protocol was approved by the CEI-R (Regional Research Ethics Committee of the Community of Madrid, Spain) and adhered to the tenets of the Declaration of Helsinki. All parents provided signed permission for their children to participate, and participants provided written consent.
: All authors consented the publication of their work.
: None.