About the Authors
- Matthew H. Bonds
- Department of Global Health and Social Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
- Andrew P. Dobson
- Department of Ecology and Evolutionary Biology, Princeton University, Princeton, New Jersey, United States of America
- Donald C. Keenan
- THEMA, Université de Cergy-Pontoise, Cergy-Pontoise, France
The authors have declared that no competing interests exist.
The author(s) have made the following declarations about their contributions: Analyzed the data: MHB. Wrote the paper: MHB APD DCK.