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Correspondence: ramzi.salloum@unc.edu
The study was jointly designed by all authors. KR and AM provided the data collection software/tool. RS, KW, and RN led the data collection.
RS and AM were responsible for data analysis. Findings were jointly interpreted by all authors. All authors contributed to successive drafts.
The final manuscript was approved by all authors.
The authors would like to thank Mona Ascha, Allison Kratka, Jason Ni, Leighanne Oh, and Alessandro Recchia, who provided essential contributions and constructive criticisms during the data collection phase of this study.
Competing interests: Dr. Ribisl and Ms. Myers have developed the Counter Tobacco Store Audit data collection system used in this study, and a tobacco retailer mapping system. Both will generate royalties when licensed. Dr. Ribisl is the Executive Director and Ms. Myers is the Deputy Director of Counter Tools, a nonprofit organization with a mission to disseminate store audit and mapping tools to public health practitioners working on policy change.
Dr. Salloum was supported by the Cancer Care Quality Training Program from the National Cancer Institute at the National Institutes of Health under [grant R25 CA116339].
Dr. Ribisl was supported by grant number 1U01 CA154281 from the National Cancer Institute at the National Institutes of Health.
© 2013 Salloum et al.; licensee BioMed Central Ltd.