About the Authors
- Boris V. Schmid, Mirjam Kretzschmar
- Unit Epidemiology & Surveillance, Centre for Infectious Disease Control, National Institute of Public Health and the Environment (RIVM), Bilthoven, The Netherlands
- Mirjam Kretzschmar
- Julius Centre for Health Sciences & Primary Care, University Medical Centre Utrecht, Utrecht, The Netherlands
The authors have declared that no competing interests exist.
Conceived and designed the experiments: BVS MK. Performed the experiments: BVS. Analyzed the data: BVS MK. Contributed reagents/materials/analysis tools: BVS. Wrote the paper: BVS MK.