Funding for this research was provided by:
Received: 18 November 2020
Accepted: 26 March 2021
First Online: 7 April 2021
: Samples used in this work were obtained from a study, which was approved by the ethic committee of the Centre for Clinical Veterinary Medicine, LMU Munich, approval number 191-05-11-2019.
: Not applicable.
: The authors declare that they have no competing interests.