About the Authors

Nicholas Thapen

nicholas.thapen@imperial.ac.uk

Affiliation Institute for Security Science and Technology, Imperial College London, London, United Kingdom

Donal Simmie

Affiliation Institute for Security Science and Technology, Imperial College London, London, United Kingdom

Chris Hankin

Affiliation Institute for Security Science and Technology, Imperial College London, London, United Kingdom

Joseph Gillard

Affiliation Defence Science and Technology Laboratory, Porton Down, Salisbury, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: NT DS CH JG. Performed the experiments: NT DS. Analyzed the data: NT DS CH. Wrote the paper: NT DS CH JG.