CotinineNicotineSkin TestsNicotinic AgonistsTobacco Smoke PollutionSensitivity and SpecificityAllergensTobacco Use DisorderSmokingGanglionic StimulantsMass ScreeningFalse Positive ReactionsEnzyme-Linked Immunosorbent AssayPapillomavirus InfectionsPolymerase Chain ReactionPrevalenceSalivaPredictive Value of TestsCross-Sectional StudiesReceptors, NicotinicSmoking CessationTobacco Use Cessation ProductsRisk FactorsPyrrolidinonesTarsNitrosaminesMecamylamineHIV InfectionsNicotinic AntagonistsChewing GumAdministration, CutaneousSubstance Withdrawal SyndromeAnabasineBiological MarkersCarbon MonoxideAryl Hydrocarbon HydroxylasesTobacco, SmokelessDihydro-beta-ErythroidineEnvironmental ExposureTobaccoSmokeGlucuronidesSelf DisclosureTobacco ProductsMentholSelf Administrationalpha7 Nicotinic Acetylcholine ReceptorMaternal ExposureDose-Response Relationship, DrugPolyvinylsTandem Mass SpectrometryMeconiumChromatography, LiquidGlucuronatesPyridinesPregnancyAzocinesAir Pollution, IndoorHairRestaurantsGas Chromatography-Mass Spectrometry