Pohl, Christian
Mack, Ines
Schmitz, Torsten
Ritz, Nicole
Article History
Received: 20 April 2017
Revised: 1 September 2017
Accepted: 5 September 2017
First Online: 30 September 2017
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Due to the retrospective, descriptive study design no patient consent was obtained. The study was approved by the ethics committee northwest/central Switzerland (EKNZ:2017-01585).
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