Funding for this research was provided by:
Text and Data Mining valid from 2019-07-15
Received: 30 March 2019
Accepted: 4 July 2019
First Online: 15 July 2019
Ethics approval and consent to participate
: The study protocol was approved by the Ethics and Research Committee of the Faculty of Dentistry (approval no. 104/Ethical Approval/FKGUI/ix/2017). The principal investigator is responsible for ensuring the confidentiality of the study documents and protecting the anonymity of all respondents. All participants provided informed consent.
: Not applicable.
: The authors declare that they have no competing interests.