About the Authors
- Anette Hulth
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* E-mail: anette.hulth@smi.se
Affiliation Department of Epidemiology, Swedish Institute for Infectious Disease Control, Solna, Sweden
- Gustaf Rydevik
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Affiliation Department of Epidemiology, Swedish Institute for Infectious Disease Control, Solna, Sweden
- Annika Linde
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Affiliation Department of Epidemiology, Swedish Institute for Infectious Disease Control, Solna, Sweden
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: AH GR. Performed the experiments: AH GR. Analyzed the data: AH GR AL. Wrote the paper: AH GR AL.