Article History
Received: 15 September 2016
Accepted: 30 November 2016
First Online: 11 February 2017
Compliance with ethical standards
:
: This study was partly funded by the EU Interreg IV A program Gezonde Kas (healthy greenhouse).
: The authors declare that there are no conflicts of interest that could be perceived as prejudicing the impartiality of the research reported.
: This article does not contain any studies with human participants or animals performed by any of the authors.
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