1. European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
2. Scientific Institute of Public Health, Brussels, Belgium
3. Ministry of Health, Youth and Sport, Paris, France
4. Institute of Hygiene and Environmental Medicine, Charité, University Medicine, Berlin, Germany
5. National Patient Safety Agency, London, United Kingdom
6. Health Protection Scotland, Glasgow, United Kingdom
7. Cliniques Universitaires Saint Luc, Brussels, Belgium