1 Small Animal Medicine Clinic, Center for Clinical Veterinary Medicine, Ludwig-Maximilian University, Veterinaerstr. 13, 80539 Munich, Germany. Electronic address: l.udraite@medizinische-kleintierklinik.de.
2 Royal Canin SAS, BP 4 - 650, Avenue de la petite Camargue, F-30470 Aimargues, France.
3 Hemopet, 11561 Salinaz Avenue, Garden Grove, CA 92843, USA.
4 Small Animal Medicine Clinic, Center for Clinical Veterinary Medicine, Ludwig-Maximilian University, Veterinaerstr. 13, 80539 Munich, Germany.