Text and Data Mining valid from 2019-08-07
Received: 10 March 2019
Accepted: 23 July 2019
First Online: 7 August 2019
Ethics approval and consent to participate
: This study did not require official or institutional ethical approval. The animals were handled according to highly ethical standards and the national legislation. Nevertheless owners were required to sign an informed consent to allow use of samples in this study.
: Not applicable.
: The authors declare that they have no competing interests.