Funding for this research was provided by:
Delft global initiative ((P70357))
Article History
Received: 18 June 2018
Accepted: 2 November 2018
First Online: 9 November 2018
Compliance with ethical standards
: 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.
: Author R. M. Oosting declares that she has no conflict of interest. Author L. S. G. L. Wauben declares that she has no conflict of interest. Author R. S. Groen declares that she has no conflict of interest. Author J. Dankelman declares she has no conflict of interest.
: Informed consent was obtained from all individual participants included in the study.