Received: 23 March 2018
Accepted: 12 June 2018
First Online: 10 September 2018
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The study has been approved by the ethical committee of the Medical Faculty of the Ruhr-University-Bochum (AZ2017245). All subjects signed an informed consent form for the investigation and data analysis using cloud software.
: Daniela Knollmann: Lecturer (Curium).Jerome Avondo: Employee HERMES Medical Solutions.Wolfgang M. Schaefer: Travel expenses (Cyclomedica, Siemens). Lecturer (Siemens, Curium). Advisory Board (Covidien, Curium).
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.