About the Authors

John A Clithero

Contributed equally to this work with: John A Clithero, Dharol Tankersley

Dharol Tankersley

Contributed equally to this work with: John A Clithero, Dharol Tankersley

Scott A Huettel

To whom correspondence should be addressed. E-mail: scott.huettel@duke.edu

Competing Interests

The authors have declared that no competing interests exist.