CotinineNicotineNicotinic AgonistsTobacco Smoke PollutionTobacco Use DisorderSmokingGanglionic StimulantsSalivaReceptors, NicotinicSmoking CessationTobacco Use Cessation ProductsPyrrolidinonesTarsNitrosaminesMecamylamineNicotinic 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