Funding for this research was provided by:
Hacettepe Üniversitesi (011 D07 101 007-135)
Text and Data Mining valid from 2019-07-02
Received: 13 October 2018
Accepted: 21 June 2019
First Online: 2 July 2019
Ethics and approval and consent to participate
: The Ethics Committee of Hacettepe University approved the study.
: Not applicable.
: The authors declare that they have no competing interests.