1. College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Queensland, Australia
2. Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
3. Technical University of Denmark, National Veterinary Institute, Kgs. Lyngby, Denmark
4. National Reference Laboratory for Fish Diseases, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Italy