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Bogdanovica I, Agrawal S, Gregory B, Britton J, Leonardi-Bee J; Tobacco Advisory Group of the Royal College of Physicians.Bogdanovica I, et al. Among authors: britton j.Clin Med (Lond). 2015 Dec;15(6):546-9. doi: 10.7861/clinmedicine.15-6-546.Clin Med (Lond). 2015.PMID: 26621943Free PMC article.Review.
Ratschen E, McNeill A, Doody GA, Britton J.Ratschen E, et al. Among authors: britton j.Lancet. 2008 Jun 21;371(9630):2067-8. doi: 10.1016/S0140-6736(08)60898-3.Lancet. 2008.PMID: 18572066No abstract available.