Text and Data Mining valid from 2019-12-01
Received: 23 June 2019
Accepted: 15 November 2019
First Online: 10 December 2019
Ethics approval and consent to participate
: All participants received thorough explanation about the research, participation was voluntary, we also noted that completing the questionnaire was considered as consent to participate.
: Not applicable.
: The authors declare that they have no competing interests.