Received: 15 April 2019
Accepted: 2 October 2019
First Online: 24 October 2019
Ethics approval and consent to participate
: This study was approved by the ethics committee of Yamaguchi University Animal Medical Center. Informed consent for taking blood was verbally obtained from the owner and was filled in medical chart. The committee approved the verbal consent at that stage because the comprehensive prior consent arrangement was also taken with documents at the first visit.
: We obtained a written consent from the owner to use a dog’s picture.
: The authors declare that they have no competing interests.