Funding for this research was provided by:
Austrian Science Fund (P30105)
Received: 1 April 2020
Accepted: 20 May 2020
First Online: 3 June 2020
Ethics approval and consent to participate
: The study was approved by the ethics committee of the Medical University of Vienna (# 1244/2016). Informed consent was obtained from all participating patients and/or legal representatives.
: Not applicable.
: The authors declare that they have no competing interests.