1. Department of Virology, Parasitology and Immunology, Faculty of Veterinary Medicine; Ghent University; Salisburylaan 133 9820 Merelbeke Belgium
2. School of Veterinary Science; University of Bristol; Langford House Langford North Somerset BS40 5DU UK
3. Department of Veterinary Medicine and Animal Productions; University of Naples Federico II; Naples Italy
4. Department of Epidemiology and Population Health; Institute of Infection and Global Health; University of Liverpool; Leahurst Neston Cheshire CH64 7TE UK
5. Institute for Parasitology and Tropical Veterinary Medicine; Freie Universität Berlin; Robert-von-Ostertag Strasse 7-13 14163 Berlin Germany
6. Department of Biomedical Sciences and Veterinary Public Health; Section for Parasitology; Swedish University of Agricultural Sciences; PO Box 7063 Uppsala Sweden
7. Institute of Parasitology; University of Zurich; Winterthurerstrasse 266a 8057 Zurich Switzerland
8. Dairy DataWarehouse; Uniform-Agri BV, Oostersingel 23 Assen The Netherlands
9. Avia-GIS, Agro-Veterinary Information and Analysis; Risschotlei 33 2980 Zoersel Belgium
10. Moredun Research Institute; Pentlands Science Park; Bush Loan Penicuik EH26 0PZ UK