Morell, Bernhard
Murray, Fritz
Vetter, Diana
Bueter, Marco
Gubler, Christoph http://orcid.org/0000-0002-0426-8069
Article History
Received: 24 October 2018
Accepted: 3 January 2019
First Online: 15 January 2019
Compliance with ethical standards
: We (the authors) have nothing to disclose. 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. Informed consent was obtained from all individual participants included in the study.