Heinzel, Alexander http://orcid.org/0000-0002-2430-4557
Boghos, Dima
Mottaghy, Felix M.
Gaertner, Florian
Essler, Markus
von Mallek, Dirk
Ahmadzadehfar, Hojjat
Article History
Received: 20 August 2018
Accepted: 2 January 2019
First Online: 29 January 2019
Compliance with ethical standards
:
: None.
: This study was approved by the Institutional Review Board of the University Hospital Aachen. Given the type of study (a retrospective analysis), the need for written informed consent was waived. All procedures were performed in accordance with the ethical standards of the institutional and/or national research committees and with the principles of the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.