About the Authors

Simon Chapman

simon.chapman@sydney.edu.au

Affiliation School of Public Health, University of Sydney, Australia

Ross MacKenzie

Affiliation School of Public Health, University of Sydney, Australia

Competing Interests

SC was a member of the Australian Smoking Cessation Consortium that received research funding from GlaxoSmithKline in 2001–2002.

Author Contributions

ICMJE criteria for authorship read and met: SC RM. Designed the experiments/the study: SC. Analyzed the data: SC. Collected data/did experiments for the study: SC. Wrote the first draft of the paper: SC. Contributed to the writing of the paper: SC RM.