Miersch, Claudia
Stange, Katja
Röntgen, Monika
Article History
Received: 23 January 2018
Accepted: 2 May 2018
First Online: 21 May 2018
Compliance with ethical standards
: This study followed the guidelines set by the Animal Care Committee of the State Mecklenburg-Western Pomerania, Germany, based on the German Law of Animal Protection.
: The authors declare that they have no conflict of interest.