1. Université de Strasbourg, CNRS, Architecture et Réactivité de l'ARN, Strasbourg, France
2. Centre for Virology, Burnet Institute, Melbourne, Victoria, Australia
3. Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria, Australia
4. School of Medicine, Faculty of Health, Deakin University, Geelong, Victoria, Australia
5. Commonwealth Scientific and Industrial Research Organization, Livestock Industries, Australian Animal Health Laboratory, Geelong, Victoria, Australia