1. Scottish Centre for Production Animal Health and Food Safety; Division of Animal Production and Public Health; Institute of Comparative Medicine; Faculty of Veterinary Medicine; University of Glasgow; Bearsden Road Glasgow G61 1QH
2. Northvet Veterinary Group; Junction Road, Kirkwall Orkney KW15 1AG
3. Epidemiology Research Unit; Scottish Agricultural College (SAC) Research, SAC; King's Buildings, West Mains Road Edinburgh EH9 3JG