About the Authors

Ian F. Burgess

To whom correspondence should be addressed. E-mail: ian@insectresearch.com

Affiliation Medical Entomology Centre, Insect Research & Development Limited, Royston, United Kingdom

Peter N. Lee

Affiliation P. N. Lee Statistics and Computing Ltd., Sutton, United Kingdom

Geraldine Matlock

Affiliation Medical Entomology Centre, Insect Research & Development Limited, Royston, United Kingdom

Competing Interests

IFB has been a consultant to various makers of pharmaceutical products, alternative therapies, and combs for treating louse infestations. PNL has analysed similar studies for other pharmaceutical companies. GM declares no competing interests.

Author Contributions

Conceived and designed the experiments: IB GM PL. Performed the experiments: IB GM. Analyzed the data: IB GM PL. Wrote the paper: IB PL.