About the Authors
- Katarina Widgren
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* E-mail: widgren.katarina@gmail.com
Affiliations Department of Epidemiology, Statens Serum Institut, Copenhagen, Denmark, European Programme for Intervention Epidemiology Training (EPIET), European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
- Jens Nielsen
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Affiliation Department of Epidemiology, Statens Serum Institut, Copenhagen, Denmark
- Kåre Mølbak
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Affiliation Department of Epidemiology, Statens Serum Institut, Copenhagen, Denmark
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: KW KM. Performed the experiments: KW. Analyzed the data: KW JN. Contributed reagents/materials/analysis tools: JN. Wrote the paper: KW KM.