About the Authors

Erika Schlaepfer

Affiliation Division of Infectious Diseases and Hospital Epidemiology, Department of Internal Medicine, University Hospital of Zurich, Zurich, Switzerland

Roberto F. Speck

roberto.speck@usz.ch

Affiliation Division of Infectious Diseases and Hospital Epidemiology, Department of Internal Medicine, University Hospital of Zurich, Zurich, Switzerland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RS ES. Performed the experiments: ES. Analyzed the data: RS ES. Wrote the paper: RS.