Text and Data Mining valid from 2019-06-11
Received: 18 March 2018
Accepted: 2 May 2019
First Online: 11 June 2019
Compliance with Ethical Standards
: The authors declare that there is no conflict of interest with regards to the research, authorship and publication of this study.
: All procedures involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki Declaration and its later amendments.
: Written informed consent stating the anonymity and confidentiality of responses, volunteer participation and the use of responses for the sole use of research was obtained from all individual participants. No identifying information from the participants was collected for the study. Participation was voluntary, and participants were free to withdraw from the research at any stage.