About the Authors
Department of Virus Associated Tumours, German Cancer Research Center, Heidelberg, Germany
Center for Virology and Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, North Carolina, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: BRC HJD. Performed the experiments: RF SDL HB HL MB HJD. Analyzed the data: RF SDL MB BRC HJD. Contributed reagents/materials/analysis tools: SDL BRC. Wrote the paper: RF BRC HJD.