Article History
Received: 23 April 2020
Revised: 11 August 2020
Accepted: 12 August 2020
First Online: 26 August 2020
Compliance with ethical standards
:
: All authors report no disclosures regarding this study.
: Not applicable.
: The study was approved by the Ethics Committee of the Ludwig Maximilian University of Munich, Germany (IRB vote no. 38-14) and has therefore been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. All patients gave an informed consent for their participation in the study and publication of the results.