von Helden, Annabell
Hildenbrand, Ralf
Sido, Bernd
Dumoulin, Franz Ludwig https://orcid.org/0000-0002-1058-7867
Article History
Received: 17 February 2019
Accepted: 3 July 2019
First Online: 10 July 2019
Ethics approval and consent to participate
: The study has been performed in accordance with the Declaration of Helsinki and has been approved by Institutional Board Review of the Gemeinschaftskrankenhaus Bonn.
: Not applicable.
: The authors declare that they have no competing interests.