Vitanova, Keti
Leopold, Cornelius
Pabst von Ohain, Jelena
Wolf, Cordula
Beran, Elisabeth
Lange, RĂ¼diger
Cleuziou, Julie
Article History
Received: 27 January 2018
Accepted: 8 May 2018
First Online: 14 May 2018
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or nation research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: For this type of study formal consent is not required.