1. European Programme for Intervention Epidemiology Training (EPIET), European Centre for Disease Prevention and Control (ECDC), Stockholm
2. Centre for Infectious Disease Control, National Institute for Public Health and the Environment (Rijksinstituut voor Volksgezondheid en Milieu, RIVM), Bilthoven, the Netherlands
3. Food and Consumer Product Safety Authority (Voedsel en Waren Autoriteit, VWA), Zutphen, the Netherlands