Funding for this research was provided by:
German Science foundation (1046/7-1)
Text and Data Mining valid from 2018-05-23
Received: 6 September 2017
Accepted: 30 April 2018
First Online: 23 May 2018
: Animal handling was approved by the governmental animal care and use office (Landesamt für Natur, Umwelt und Verbraucherschutz Nordrhein- Westfalen, Recklinghausen, Germany, Protocol No. 8.87–51.05.20.10.217) and was in accordance with the German Animal Welfare Act as well as with the General Administrative Directive for the Execution of the Protection of Animals Act. No experiment was conducted on humans or with human cells or tissues in this study.
: The authors declare that they have no competing interests.
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