Funding for this research was provided by:
Bundesministerium für Ernährung und Landwirtschaft (2812NA120)
Article History
Received: 17 March 2018
Revised: 8 June 2018
Accepted: 22 July 2018
First Online: 2 August 2018
Compliance with ethical standards
:
: The authors declare that there is no conflict of interest.
: All procedures involving animals were in accordance with Federal and State regulations (permit number of LANUV North-Rhine-Westphalia No. 84-02.04.2014.A259).