About the Authors

Jason Corburn

jcorburn@berkeley.edu

Affiliation University of California Berkeley, Department of City and Regional Planning & School of Public Health, Berkeley, California, United States of America

Alison K. Cohen

Affiliation University of California Berkeley, School of Public Health, Division of Epidemiology, Berkeley, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Wrote the first draft of the manuscript: JC. Contributed to the writing of the manuscript: JC AC. ICMJE criteria for authorship read and met: JC AC. Agree with manuscript results and conclusions: JC AC. Worked in Richmond: JC AC. Worked in Nairobi: JC.