Campbell, K. A., Cooper, S., Fahy, S. J., Bowker, K., Leonardi-Bee, J., McEwen, A., . . . Coleman, T. (2017). ‘Opt-out’ referrals after identifying pregnant smokers using exhaled air carbon monoxide: Impact on engagement with smoking cessation support. Tob Control.

Campbell, Katarzyna A., Sue Cooper, Samantha J. Fahy, Katharine Bowker, Jo Leonardi-Bee, Andy McEwen, Rachel Whitemore, i Tim Coleman. "‘Opt-out’ Referrals After Identifying Pregnant Smokers Using Exhaled Air Carbon Monoxide: Impact On Engagement With Smoking Cessation Support." Tob Control 2017.

Campbell, Katarzyna A., et al. "‘Opt-out’ Referrals After Identifying Pregnant Smokers Using Exhaled Air Carbon Monoxide: Impact On Engagement With Smoking Cessation Support." Tob Control 2017.