About the Authors

Stephan Steidl

ssteidl@luc.edu

Current address: Department of Psychology, Loyola University Chicago, Chicago, Illinois, United States of America

Affiliation Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health/Department of Health and Human Services, Baltimore, Maryland, United States of America

Huiling Wang

Affiliation Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health/Department of Health and Human Services, Baltimore, Maryland, United States of America

Roy A. Wise

Affiliation Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health/Department of Health and Human Services, Baltimore, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SS HLW RAW. Performed the experiments: SS HLW. Analyzed the data: SS. Contributed reagents/materials/analysis tools: RAW. Wrote the paper: SS HLW RAW.