van Hout, L. http://orcid.org/0000-0001-8084-4577
Bökkerink, W. J. V.
Ibelings, M. S.
Heisterkamp, J.
Vriens, P. W. H. E.
Article History
Received: 9 June 2017
Accepted: 22 January 2018
First Online: 27 January 2018
Compliance with ethical standards
:
: LvH declares no conflict of interest. WB declares no conflict of interest. MI declares no conflict of interest. JH declares no conflict of interest. PV declares no conflict of interest.
: 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.
: This article does not contain any studies with human participants or animals performed by any of the authors.
: For this type of study formal consent is not required.