About the Authors

Judith J. Prochaska


Affiliation Stanford Prevention Research Center, Department of Medicine, Stanford University, Stanford, California, United States of America

Rachel A. Grana

Affiliation Center for Tobacco Control Research and Education, Cardiovascular Research Institute, 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: JJP. Performed the experiments: JJP. Analyzed the data: JJP. Contributed reagents/materials/analysis tools: JJP. Wrote the paper: JJP RAG.