1. Small Animal Clinic, Department of Surgery, Orthopaedics, Radiology and Reproduction, (Bilská, Ledecký, Hluchý), University of Veterinary Medicine and Pharmacy, Košice, Slovakia
2. Department of Chemistry, Biochemistry and Biophysics (Šteffeková), University of Veterinary Medicine and Pharmacy, Košice, Slovakia
3. Department of Medical and Clinical Biochemistry and LABMED, a.s., Faculty of Medicine, Pavol Jozef Šafárik University, Košice, Slovakia (Birková, Mareková)
4. Department of Animal Physiology, Institute of Biology and Ecology, Pavol Jozef Šafárik University, Košice, Slovakia (Kisková)