Ugurbas, Silay Canturk http://orcid.org/0000-0002-6288-0467
Kucuk, Numan
Isik, Irem
Alpay, Atilla
Buyukuysal, Cagatay
Ugurbas, Suat Hayri
Funding for this research was provided by:
Zonguldak Governorship Special Resources Fund
Article History
Received: 20 October 2018
Accepted: 1 March 2019
First Online: 12 March 2019
Ethics approval and consent to participate
: Approval for the study was obtained from Zonguldak Bulent Ecevit Ethics Committee (Ref No 2010–209-10/10). The study approved to the tenets of Declaration of Helsinki. Written informed consent was required from at least one parent of each child and verbal assent of all children were obtained before examination.
: Not applicable.
: The authors declare that they have no competing interests.
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