About the Authors

Birgit Vossenkuhl

43@bfr.bund.de

Affiliation Federal Institute for Risk Assessment, Berlin, Germany

Jörgen Brandt

Current address: Humboldt University, Unter den Linden 6, Berlin, Germany

Affiliation Federal Institute for Risk Assessment, Berlin, Germany

Alexandra Fetsch

Affiliation Federal Institute for Risk Assessment, Berlin, Germany

Annemarie Käsbohrer

Affiliation Federal Institute for Risk Assessment, Berlin, Germany

Britta Kraushaar

Affiliation Federal Institute for Risk Assessment, Berlin, Germany

Katja Alt

Current address: Robert Koch Institute, DGZ-Ring 1, Berlin, Germany

Affiliation Federal Institute for Risk Assessment, Berlin, Germany

Bernd-Alois Tenhagen

Affiliation Federal Institute for Risk Assessment, Berlin, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AK BAT KA. Performed the experiments: BK. Analyzed the data: BV. Contributed reagents/materials/analysis tools: JB. Wrote the paper: BV. Designed the software used for bootstrap method: JB. Administration and organisation of the project: AF.