About the Authors
Molecular Virology Laboratory, Department of Medical Microbiology, Center of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands
Departments of Epidemiology and Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: AJWtV SHEvdW EJS MJvH. Performed the experiments: AJWtV SHEvdW MJvH. Analyzed the data: AJWtV SHEvdW ACS RSB EJS MJvH. Contributed reagents/materials/analysis tools: ACS RSB. Wrote the paper: AJWtV EJS MJvH.