Ferrari, Irene
Shehu, Nerejda
Mkrtchyan, Naira
Martinoff, Stefan
Eicken, Andreas
Stern, Heiko
Ewert, Peter
Meierhofer, Christian
Article History
Received: 8 September 2019
Accepted: 11 December 2019
First Online: 19 December 2019
Compliance with Ethical Standards
:
: None of the authors have any conflict of interest to declare.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Since study design was retrospective, no informed consent was needed.