About the Authors

Cristin E. Kearns

Affiliations Philip R. Lee Institute for Health Policy Studies, University of California San Francisco, San Francisco, California, United States of America, Department of Medicine, University of California San Francisco, San Francisco, California, United States of America, Department of Orofacial Sciences, University of California San Francisco, San Francisco, California, United States of America

Stanton A. Glantz

glantz@medicine.ucsf.edu

Affiliations Philip R. Lee Institute for Health Policy Studies, University of California San Francisco, San Francisco, California, United States of America, Department of Medicine, University of California San Francisco, San Francisco, California, United States of America, Center for Tobacco Control Research and Education, University of California San Francisco, San Francisco, California, United States of America, Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, California, United States of America

Laura A. Schmidt

Affiliations Philip R. Lee Institute for Health Policy Studies, University of California San Francisco, San Francisco, California, United States of America, Department of Medicine, University of California San Francisco, San Francisco, California, United States of America, Clinical and Translational Science Institute, University of California San Francisco, San Francisco, California, United States of America, Department of Anthropology, History and Social Medicine, 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: CEK SAG LAS. Performed the experiments: CEK. Analyzed the data: CEK SAG LAS. Wrote the first draft of the manuscript: CEK. Contributed to the writing of the manuscript: CEK SAG LAS. Agree with manuscript results and conclusions: CEK SAG LAS. All authors have read, and confirm that they meet, ICMJE criteria for authorship.