CotinineTobacco Smoke PollutionNicotineSmokingSalivaPyrrolidinonesSensitivity and SpecificityNitrosaminesBiological MarkersROC CurveGanglionic StimulantsNicotinic AgonistsTarsEnvironmental ExposureTobacco Use DisorderSmoking CessationReproducibility of ResultsGas Chromatography-Mass SpectrometrySelf DisclosureAryl Hydrocarbon HydroxylasesAnabasineCarbon MonoxideSubstance Abuse DetectionGlucuronidesTandem Mass SpectrometryMaternal ExposureMeconiumChromatography, LiquidTobacco Use Cessation ProductsPredictive Value of TestsGlucuronates