Funding for this research was provided by:
T?rkiye Bilimsel ve Teknolojik Ara?tirma Kurumu (213S004)
Article History
Received: 25 July 2018
Accepted: 11 January 2019
First Online: 13 February 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: All parents of the participants gave their informed consent prior to their inclusion in the study.