Shipton, D., Tappin, D. M., Vadiveloo, T., Crossley, J. A., Aitken, D. A., & Chalmers, J. (2009). Reliability of self reported smoking status by pregnant women for estimating smoking prevalence: A retrospective, cross sectional study. BMJ Publishing Group Ltd.

Shipton, Deborah, David M. Tappin, Thenmalar Vadiveloo, Jennifer A. Crossley, David A. Aitken, and Jim Chalmers. Reliability of Self Reported Smoking Status By Pregnant Women for Estimating Smoking Prevalence: A Retrospective, Cross Sectional Study. BMJ Publishing Group Ltd, 2009.

Shipton, Deborah, et al. Reliability of Self Reported Smoking Status By Pregnant Women for Estimating Smoking Prevalence: A Retrospective, Cross Sectional Study. BMJ Publishing Group Ltd, 2009.