About the Authors

Monika Redlberger-Fritz

Contributed equally to this work with: Monika Redlberger-Fritz, Michael Kundi, Theresia Popow-Kraupp

Affiliation Department of Virology, Medical University Vienna, Vienna, Austria

Michael Kundi

Contributed equally to this work with: Monika Redlberger-Fritz, Michael Kundi, Theresia Popow-Kraupp

Affiliation Institute of Environmental Health, Center for Public Health, Medical University Vienna, Vienna, Austria

Theresia Popow-Kraupp

Contributed equally to this work with: Monika Redlberger-Fritz, Michael Kundi, Theresia Popow-Kraupp

theresia.popow-kraupp@meduniwien.ac.at

Affiliation Department of Virology, Medical University Vienna, Vienna, Austria

Competing Interests

The authors have the following interests. The Austrian Sentinel Physician Surveillance Network was supported by Roche Austria AG (www.roche.at). There are no patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials, as detailed on-line in the guide for authors.

Author Contributions

Conceived and designed the experiments: MR TP. Performed the experiments: MR TP. Analyzed the data: MR MK TP. Contributed reagents/materials/analysis tools: MR MK TP. Wrote the paper: MR TP.