Received: 8 October 2019
Accepted: 28 May 2020
First Online: 5 June 2020
Ethics approval and consent to participate
: All procedures performed in the current study were in line with the Declaration of Helsinki, and were approved by the Ethics Committee of Trakya University (19/04). All parents of children participating in the study gave written informed consent before participating in the study.
: Not applicable (No personal data published.).
: The authors declare that they have no competing interests.