About the Authors

Emily S. Wires

Contributed equally to this work with: Emily S. Wires, Mark J. Henderson

Affiliation Intramural Research Program, National Institute on Drug Abuse, Baltimore, Maryland, United States of America

Mark J. Henderson

Contributed equally to this work with: Emily S. Wires, Mark J. Henderson

Affiliation Intramural Research Program, National Institute on Drug Abuse, Baltimore, Maryland, United States of America

Xiaokang Yan

Affiliation Intramural Research Program, National Institute on Drug Abuse, Baltimore, Maryland, United States of America

Susanne Bäck

Affiliation Intramural Research Program, National Institute on Drug Abuse, Baltimore, Maryland, United States of America

Kathleen A. Trychta

Affiliation Intramural Research Program, National Institute on Drug Abuse, Baltimore, Maryland, United States of America

Molly H. Lutrey

Affiliation Intramural Research Program, National Institute on Drug Abuse, Baltimore, Maryland, United States of America

Brandon K. Harvey

BHarvey@intra.nida.nih.gov

Affiliation Intramural Research Program, National Institute on Drug Abuse, Baltimore, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: ESW MJH BKH. Formal analysis: BKH ESW XY MJH SB. Investigation: ESW MJH XY KAT SB MHL. Methodology: ESW MJH. Project administration: MJH BKH. Resources: BKH. Supervision: ESW MJH BKH. Validation: BKH. Visualization: ESW MJH XY BKH. Writing – original draft: ESW MJH BKH. Writing – review & editing: ESW MJH XY KAT SB BKH.