van Hout, L.
Bökkerink, W. J. V.
Ibelings, M. S.
Vriens, P. W. H. E.
Article History
Received: 13 June 2019
Accepted: 9 September 2019
First Online: 21 September 2019
Compliance with ethical standards
:
: LvH declares no conflict of interest. WB declares no conflict of interest. MI declares no conflict of interest. PV declares no conflict of interest.
: All procedures performed were in accordance with the ethical standards of the institute and regional research committee and with the 1964 Helsinki declaration and its later amendments of comparable ethical standards.
: This article does not contain any studies with human participants or animals performed by any of the authors.
: For this study formal consent is not required.