About the Authors
- John P. McCracken, Joel Schwartz
- Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts, United States of America
- Anaite Diaz
- Center for Health Studies, Universidad del Valle de Guatemala, Guatemala City, Guatemala
- Nigel Bruce
- Department of Public Health and Policy, University of Liverpool, Liverpool, United Kingdom
- Kirk R. Smith
- School of Public Health, University of California, Berkeley, California, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: JPM JS KRS NB. Performed the experiments: JPM AD. Analyzed the data: JPM KRS. Wrote the paper: JPM NB KRS.