Funding for this research was provided by:
State of Hessen, represented by the regional authorities Darmstadt, Gießen and Kassel. (grant F7/2012)
Text and Data Mining valid from 2018-11-28
Received: 21 March 2018
Accepted: 21 November 2018
First Online: 28 November 2018
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.