Received: 14 June 2018
Accepted: 2 October 2018
First Online: 11 October 2018
Ethics approval and consent to participate
: The study was approved by the National Ethics Committee (No. 107/07/16). Participants gave a verbal informed consent to participate in the study. As this was an electronic survey, a written consent was not applicable. The method of acquiring the consent was approved by the ethics committee.
: Not applicable.
: The authors declare they have no competing interests.
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