Funding for this research was provided by:
Yildiz Technical University, Scientific Research Projects Coordination Department (2016-04-01-DOP03)
Text and Data Mining valid from 2019-01-31
Received: 10 July 2018
Accepted: 16 January 2019
First Online: 31 January 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.