Keck, Natalija
Giessner, Steffen R.
Van Quaquebeke, Niels
Kruijff, Erica
Article History
Received: 28 February 2018
Accepted: 28 October 2018
First Online: 17 November 2018
<!--Emphasis Type='Bold' removed-->Compliance withEthical<!--Emphasis Type='Bold' removed-->Standards
:
: The authors declare that there is no conflict of interest concerning this study.
: 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.