1. Department for Small Animals, Veterinary Teaching Hospital, College of Veterinary MedicineUniversity of Leipzig Leipzig Germany
2. Institute of Agricultural and Nutritional SciencesMartin Luther University Halle‐Wittenberg Halle (Saale) Germany
3. School of Veterinary ScienceMassey University Palmerston North New Zealand
4. Clinic for Small Animal Internal Medicine, Vetsuisse FacultyUniversity of Zurich Zurich Switzerland
5. Institute of Veterinary Physiology, College of Veterinary MedicineUniversity of Leipzig Leipzig Germany