Meyer, Hans Jonas
Leifels, Leonard
Hamerla, Gordian
Höhn, Anne Kathrin
Surov, Alexey http://orcid.org/0000-0002-9273-3943
Article History
First Online: 3 October 2018
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: This study adhered to the principles of the Declaration of Helsinki II and was approved by the Institutional Review Board of the University of Leipzig (ethics committee of the University of Leipzig, study codes 180-2007, 201-10-12072010, and 341-15-05102015). Written informed consent was obtained from all the study participants.