title: Rigorous methodology is needed to analyze and interpret observational data on the use and effectiveness of smoking cessation AIDS.
authors.affiliation: Department of Family Medicine, CAPHRI School for Public Health and Primary Care, Maastricht University Medical Centre, Maastricht, the Netherlands; Cancer Research UK Health Behavior Research Centre, University College London, London, UK d.kotz@maastrichtuniversity.nl.
authors.forename: Daniel
authors.initials: D
authors.lastname: Kotz
mesh_terms: D006801:Humans; D008297:Male