Authors
Martin Kärner
Faculty of Science and Technology, University of Tartu, Estonia
Tõnu Järveots
Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences
Lazo Pendovski
Faculty of Veterinary Medicine, Ss.Cyril and Methodius University in Skopje, Skopje, Macedonia (the former Yugoslav Republic of)
Ilmars Duritis
Faculty of Veterinary Medicine, Latvian University of Agriculture, Latvia
Florina Popovska-Percinic
Faculty of Veterinary Medicine, Ss.Cyril and Methodius University in Skopje, Skopje, Macedonia (the former Yugoslav Republic of)