Kristen, Karl-Heinz
Seilern und Aspang, Jesse http://orcid.org/0000-0002-4479-3132
Wiedemann, Johannes
Hartenbach, Florian
Platzgummer, Hannes
Article History
Received: 22 January 2019
Accepted: 21 June 2019
First Online: 2 July 2019
Competing interest
: The authors have no affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaus; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent-licensing arrangements), or non-financial interest (such as personal or professional relationships, affiliations, knowledge or beliefs) in the subject matter or materials discussed in this manuscript.
: 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.
: Not applicable.
: The authors declare that they have no competing interests.