About the Authors

Anina M. Pescatore

Affiliation Institute of Social and Preventive Medicine, University Bern, Bern, Switzerland

Ben D. Spycher

Affiliation Institute of Social and Preventive Medicine, University Bern, Bern, Switzerland

Caroline S. Beardsmore

Affiliation Division of Child Health, Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, United Kingdom

Claudia E. Kuehni

claudia.kuehni@ispm.unibe.ch

Affiliation Institute of Social and Preventive Medicine, University Bern, Bern, Switzerland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AMP BDS CEK. Performed the experiments: CSB CEK. Analyzed the data: AMP BDS. Wrote the paper: AMP BDS CSB CEK.