About the Authors
- Simon A. Weller
- Defence Science and Technology Laboratory, Porton Down, Salisbury, United Kingdom
The authors have declared that no competing interests exist.
Conceived and designed the experiments: SAW. Performed the experiments: PAR SAW. Analyzed the data: SAW VC. Contributed reagents/materials/analysis tools: SAW PAR HLR RAL ALM. Wrote the paper: SAW PAR.