1. Centre for Infectious Disease Control Netherlands National Institute for Public Health and the Environment (RIVM) Bilthoven The Netherlands
2. Nivel Primary Care Database – sentinel practices Utrecht the Netherlands
3. National Intensive Care Evaluation Amsterdam the Netherlands
4. Department of Intensive Care Medicine University Medical Center University Utrecht Utrecht the Netherlands
5. Department of Intensive Care Medicine Amsterdam UMC Location AMC Amsterdam The Netherlands
6. Department of Medical Informatics Amsterdam UMC Location AMC Amsterdam Public Health research institute Amsterdam The Netherlands