About the Authors

Adam J. de Smith

adam.desmith@ucsf.edu

Affiliation Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California, United States of America

Kyle M. Walsh

Affiliation Division of Neuroepidemiology, Department of Neurological Surgery, University of California San Francisco, San Francisco, California, United States of America

Helen M. Hansen

Affiliation Division of Neuroepidemiology, Department of Neurological Surgery, University of California San Francisco, San Francisco, California, United States of America

Alyson A. Endicott

Affiliation Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California, United States of America

John K. Wiencke

Affiliation Division of Neuroepidemiology, Department of Neurological Surgery, University of California San Francisco, San Francisco, California, United States of America

Catherine Metayer

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

Joseph L. Wiemels

Affiliations Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California, United States of America, Division of Neuroepidemiology, Department of Neurological Surgery, University of California San Francisco, San Francisco, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AJD KMW JLW. Performed the experiments: AJD HMH AAE. Analyzed the data: AJD. Contributed reagents/materials/analysis tools: JLW CM KMW JKW. Wrote the paper: AJD JLW. Reviewed the manuscript: AJD KMW HMH AAE JKW CM JLW.