1. Mars GmbHVerdenGermany
2. WALTHAM Centre for Pet NutritionLeicestershireUK
3. Institute of Nutritional ScienceUniversity of PotsdamBergholz‐RehbrückeGermany
4. Department of Veterinary MedicineClinic of Small AnimalsFreie Universität BerlinBerlinGermany
5. Department of Veterinary MedicineInstitute of Animal NutritionFreie Universität BerlinBerlinGermany