Received: 6 November 2020
Accepted: 21 January 2021
First Online: 29 January 2021
Ethics approval and consent to participate
: Prior to completion of the survey, all patients were informed about the purpose of the study, were assured abouth the confidentiality and anonymity of the answers told they could terminate the interview at any time. According to the Greek legislation (Law 2328/1995, Presidential Decree 310/1996, Law 3603/2007, Law 2472/1997, Law 3471/2006) there is no need for ethics approval in telephone and internet surveys such the one presented here (Association of Opinion Polls and Survey Organisations - ExternalRef removed). Therefore, the study protocol was not submitted to the ethical committee of any institution for approval.
: Not applicable.
: The authors declare that they have no competing interests.