Text and Data Mining valid from 2019-08-13
Received: 29 May 2019
Accepted: 5 August 2019
First Online: 13 August 2019
Compliance with ethical standards
: The authors declare that they have no conflicts of interest.
: The survey was completely anonymous at all stages. As no information on respondents’ health was collected, no ethical approval was required for this study.
: Participation for this study was voluntary and not compensated.