Text and Data Mining valid from 2019-05-06
Received: 22 December 2018
Accepted: 22 April 2019
First Online: 6 May 2019
Ethics approval and consent to participate
: This study was performed in accordance with the German Animal Protection Law based on national and international recommendations and confirmed by the Animal Welfare Committee of the University of Goettingen (File number E3–17).
: Not applicable.
: The authors declare that they have no competing interests.
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