Harasztosi, C.
Gummer, A. W.
Article History
First Online: 9 May 2019
Compliance with ethical guidelines
:
: C. Harasztosi and A. W. Gummer declare that they have no competing interests.
: The study was approved by the Animal Protection, Veterinary Service and Veterinary Medicine Department of the University of Tübingen and by the Regional Council Tübingen.