1. Sydney School of Veterinary Science University of Sydney Camperdown New South Wales Australia
2. Department of Microbiology and Infectious Diseases Concord Repatriation General Hospital Sydney New South Wales Australia
3. Infection Control Programme and WHO Collaborating Centre on Patient Safety Geneva University Hospitals and University of Geneva Faculty of Medicine Geneva Switzerland
4. Institute of Global Health, Faculty of Medicine University of Geneva Geneva Switzerland
5. Faculty of Health Sciences University of Malta Msida Malta