title: Erratum to: Gender difference and effect of pharmacotherapy: findings from a smoking cessation service.
authors.affiliation: Oxford Biomedical Research Centre, Churchill Hospital, Oxford, England. Neil.Walker3@ouh.nhs.uk.
authors.forename: N J
authors.initials: NJ
authors.lastname: Walker
authors.affiliation: Institute of Primary Care & Public Health, Cardiff University, Cardiff, Wales.|Centre for Health Sciences, University of the Highlands and Islands, Inverness, Scotland.
authors.forename: H C
authors.initials: HC
authors.lastname: van Woerden
authors.affiliation: Oxford Biomedical Research Centre, Churchill Hospital, Oxford, England.
authors.forename: V
authors.initials: V
authors.lastname: Kiparoglou
authors.affiliation: Nuffield Department of Primary Care Health Science, University of Oxford, Oxford, England.
authors.forename: Y
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Quit 51 Stop Smoking Service, Burton-on-, Trent, England.
authors.forename: H
authors.initials: H
authors.lastname: Robinson
authors.affiliation: Quit 51 Stop Smoking Service, Burton-on-, Trent, England.
authors.forename: E
authors.initials: E
authors.lastname: Croghan