About the Authors
Department of Geography and Institute of Behavioral Science, University of Colorado at Boulder, Boulder, Colorado, United States of America
ICDDR,B, Centre for Health and Population Research, Dhaka, Bangladesh
Department of Geography and Carolina Population Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: EDR ME. Performed the experiments: EDR. Analyzed the data: EDR JR. Contributed reagents/materials/analysis tools: MY ME. Wrote the paper: EDR JR ME. Obtained permission for using data: MY.