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Article History

Received: 2 February 2021

Accepted: 3 March 2021

First Online: 12 March 2021

Declarations

:

: The study was not submitted to our institutional ethics committee, because it was a retrospective study using medical records of cows that had been referred to our clinic for examination and treatment. No experimental animals were used. Under these circumstances, ethical approval is not required in Switzerland. Written consent was obtained from all owners to participate.

: All owners signed a consent form allowing us to use the animals and all the associated medical data for scientific analysis and publication.

: The authors declare that they have no competing interests.