Text and Data Mining valid from 2018-01-19
Received: 1 August 2017
Accepted: 11 January 2018
First Online: 19 January 2018
Compliance with Ethical Standards
: M Komrakova, J Fiebig, D Hoffmann, C Krischek, W Lehmann, KM Stuermer, and S Sehmisch declare that they have no conflict of interest.
: The animal study protocol was approved by the local regional government (33.4-42502-04-14/1396, Oldenburg, Germany) in accordance with German animal protection laws prior to performing the study.