About the Authors

Biyu J. He

biyu.he@nih.gov

Affiliation National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, United States of America

John M. Zempel

Affiliation Departments of Neurology and Pediatrics, Washington University School of Medicine, St. Louis, Missouri, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: BJH. Performed the experiments: BJH JMZ. Analyzed the data: BJH. Wrote the paper: BJH.