Article History
Received: 16 September 2019
Revised: 11 January 2020
Accepted: 17 January 2020
First Online: 27 January 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Ethical approval for the study was granted by the local Helsinky Committee.
: Informed consent was not applicable due to the study’s retrospective design.