1. Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, 244 Eaglewood Court, Athens, Georgia, 30606 US, Grupo de Parasitología Veterinaria, Universidad Nacional de Colombia
2. Health Protection Practitioner, Public Health England South East, Thames Valley PHEC, Chilton, Didcot, Oxfordshire, OX11 0RQ
3. Veterinary Specialist for Parasitology, Key Account Manager for Infectious Diseases, IDEXX Laboratories, D-71636 Ludwigsburg, Germany