1. Unit 'HIV/AIDS, STI and Blood-borne Infections', Department of Infectious Disease Epidemiology, Robert Koch Institute, Berlin, Germany
2. State Office for Health and Social Affairs (SOHSA), Unit for Surveillance and Epidemiology of Infectious Diseases, Berlin, Germany
3. Unit 'Gastrointestinal Infections, Zoonoses and Tropical Infections', Department of Infectious Disease Epidemiology, Robert Koch Institute, Berlin, Germany
4. European Programme for Intervention Epidemiology Training (EPIET), European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
5. Postgraduate Training in Applied Epidemiology (PAE) Unit 'Infectious Disease Epidemiology, Crisis Management, Outbreak Investigations and Training Programmes, Focal Point for the Public Health Service', Department of Infectious Disease Epidemiology, Robert Koch Institute, Berlin, Germany