About the Authors

Josep M. Pujol

jmpujol@umich.edu

Affiliations Department of Epidemiology, University of Michigan, Ann Arbor, Michigan, United States of America, Center for the Study of Complex Systems, University of Michigan, Ann Arbor, Michigan, United States of America

Joseph E. Eisenberg

Affiliation Department of Epidemiology, University of Michigan, Ann Arbor, Michigan, United States of America

Charles N. Haas

Affiliation Department of Civil, Architectural and Environmental Engineering, Drexel University, Philadelphia, Pennsylvania, United States of America

James S. Koopman

Affiliation Department of Epidemiology, University of Michigan, Ann Arbor, Michigan, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JMP JEE CNH JSK. Performed the experiments: JMP JEE JSK. Analyzed the data: JMP JEE JSK. Contributed reagents/materials/analysis tools: JMP JEE JSK. Wrote the paper: JMP JEE JSK.