1. Outpatient Clinic, Department and Clinic of Internal Medicine, Faculty of Veterinary Science, Szent Istvan University, H‐1078 Budapest, Istvan u 2, Hungary
2. *Central Veterinary Institute, H‐1149 Budapest, Tabornok u 2, Hungary
3. †Sanovet Dent Veterinary Clinic, H‐1032 Budapest, Szölö köz 6, Hungary