Received: 28 April 2020
Accepted: 15 September 2020
First Online: 22 October 2020
Ethics approval and consent to participate
: This research followed the tenets of the Declaration of Helsinki. Approval was obtained by the Ethics committee of the University Hospital of Alexandroupolis (ID: ES3/Th2/27-03-2019). All participants provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.