Received: 30 May 2019
Accepted: 10 March 2020
First Online: 1 April 2020
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: All procedures performed in the study involving human participants were in accordance with the ethical standards (Reference no. 239) of the research and scientific committee of Polikliniki, General Hospital in Athens, Greece and in accordance with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.
: Informed consent was obtained from all patients included in the study.