About the Authors
- Steve J. Torr, Glyn A. Vale
- Natural Resources Institute, University of Greenwich, London, United Kingdom
- Glyn A. Vale
- South African Centre for Epidemiological Modelling and Analysis (SACEMA), University of Stellenbosch, Stellenbosch, South Africa
The authors have declared that no competing interests exist.
Conceived and designed the experiments: GAV SJT. Performed the experiments: GAV. Analyzed the data: SJT GAV. Wrote the paper: SJT GAV.