Received: 23 April 2019
Accepted: 14 October 2019
First Online: 4 November 2019
Ethics approval and consent to participate
: There were no associated ethical issues in this clinical study and all the dog breeders involved gave written consent for their participation, seeing the study as vital to future breeding programmes and the wellbeing of the breed.
: The authors would like to thank the breeders of all the dogs included in this clinical study for their participation and their permission to publish the results. Written consent in both Polish and English to publish all the personal and clinical details together with the identifying images and the pedigree analysis has been obtained and the statements are available for scrutiny. These records are held by both the authors and the breeders.
: The authors declare that they have no competing interests.