Funding for this research was provided by:
Javna Agencija za Raziskovalno Dejavnost RS (P3-0314)
Text and Data Mining valid from 2018-08-02
Received: 18 May 2018
Accepted: 23 July 2018
First Online: 2 August 2018
Compliance with ethical standards
: The study was approved by the National Medical Ethics Committee.