Eichenauer, Dennis A. http://orcid.org/0000-0002-1927-3514
Golla, Heidrun
Thielen, Indra
Hallek, Michael
Voltz, Raymond
Perrar, Klaus Maria
Article History
Received: 8 April 2019
Accepted: 16 June 2019
First Online: 28 June 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Given the non-interventional retrospective nature of the study, no ethical approval for its conduct was necessary according to the policy of the ethics committee of the Faculty of Medicine of the University of Cologne. For the same reason, no informed consent had to be obtained from the included patients.