Text and Data Mining valid from 2018-04-03
Received: 20 March 2017
Accepted: 27 March 2018
First Online: 3 April 2018
Ethics approval and consent to participate
: The study was approved by the ethics commissions of the University of Veterinary Medicine Hannover, Foundation. Owners were present at the examination and their oral informed consents were given.
: Not applicable.
: The authors declare that they have no competing interests.
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