Article History
Received: 9 December 2019
Accepted: 7 February 2020
First Online: 18 February 2020
Compliance with ethical standards
:
: The authors have no funding or conflict of interest to disclose.
: For this retrospective study, ethical approval and informed consent was not required. However, this study was conducted according to the principles of the Declaration of Helsinki and in accordance with the Medical Treatment Agreement Act and the General Data Protection Regulation.