About the Authors
Institute of Medical Virology, University of Zurich, Zurich, Switzerland
Institute of Immunology and Genetics, Kaiserslautern, Germany
Department of Biosystems Science and Engineering, ETH Zurich, Basel, Switzerland
SIB Swiss Institute of Bioinformatics, Basel, Switzerland
The authors have declared that no competing interests exist.
Conceived and designed the experiments: OZ MD CB NB. Performed the experiments: MD CB. Analyzed the data: OZ NB. Contributed reagents/materials/analysis tools: MD CB. Wrote the paper: OZ NB.