About the Authors
Max von Pettenkofer-Institut, Ludwig-Maximilians-University of Munich (LMU), Munich, Germany
Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, Tübingen, Germany
Department of Genetics, University of Leicester, Leicester, United Kingdom
The authors have declared that no competing interests exist.
Conceived and designed the experiments: CG JH. Performed the experiments: CG. Analyzed the data: CG JH CW. Contributed reagents/materials/analysis tools: CG JH CW JAM. Wrote the paper: CG JH.