1. Department of Veterinary Clinical Sciences, Small Animal Clinic Justus‐Liebig‐University Giessen Germany
2. Department of Internal Medicine and Clinic for Horses, Dogs and Cats, The Faculty of Veterinary Medicine Wrocław University of Environmental and Life Sciences Wrocław Poland
3. Unit for Biomathematics and Data Processing, Faculty of Veterinary Medicine Justus Liebig‐University‐Giessen Giessen Germany