title: An indicator to unmask smokers.
mesh_terms: D000293:Adolescent; D000328:Adult; D003367:Cotinine / Q000378:metabolism; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009538:Nicotine / Q000378:metabolism; D012737:Sex Factors; D012907:Smoking; D013861:Thiocyanates / Q000378:metabolism; D013997:Time Factors
chemical_list: D013861:Thiocyanates; D009538:Nicotine; D003367:Cotinine