Text and Data Mining valid from 2018-10-31
Received: 26 June 2018
Revised: 18 October 2018
Accepted: 22 October 2018
First Online: 31 October 2018
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: Written informed consent was obtained from all individual participants’ parents included in the study. Additionally, participants above 8 years approved a pediatric informed consent.
: The study protocol was approved by the Ankara University School of Medicine Institutional Ethics Committee (Approval number: 19-800-15; Dec 2015). All procedures performed in studies 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.