
TSNA exposure from cigarette smoking: 18Â Years of urinary NNAL excretion data
Keywords: NNAL; 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol; NNK; 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone; NNN; N-nitrosonornicotine; CPD; cigarettes per day; TSNA; tobacco specific nitrosamine; Cigarettes; NNAL; NNN; NNK; Tobacco products; Tobacco specifi