About the Authors

Leslie A. Gillum

Affiliation Department of Neurology, University of California San Francisco, San Francisco, California, United States of America

Christopher Gouveia

Affiliation Department of Neurology, University of California San Francisco, San Francisco, California, United States of America

E. Ray Dorsey

Affiliation Department of Neurology, Johns Hopkins University Medical Center, Baltimore, Maryland, United States of America

Mark Pletcher

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

Colin D. Mathers

Affiliation Department of Health Statistics and Informatics, World Health Organization, Geneva, Switzerland

Charles E. McCulloch

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

S. Claiborne Johnston

Clay.johnston@ucsfmedctr.org

Affiliations Department of Neurology, University of California San Francisco, San Francisco, California, United States of America, Department of Epidemiology and Biostatistics, 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: LAG ERD MP CDM SCJ. Analyzed the data: LAG SCJ. Contributed reagents/materials/analysis tools: LAG CEM SCJ. Wrote the paper: LAG SCJ. Acquisition of data: LAG CG CDM SCJ. Critical revision for intellectual content: LAG ERD MP CDM CEM SCJ. Study Supervision: SCJ LAG. Obtained funding: LAG.