1. Faculty of Veterinary Science; Szent István University; István utca 2 1078 Budapest Hungary
2. Intervet Pharma R&D, Intervet Schering-Plough Animal Health; rue Olivier de Serres, Angers Technopole, BP 67131 49071 Beaucouzé Cedex France
3. Peptech Animal Health; Macquarie Park NSW 2113 Australia