title: Expired air carbon monoxide accumulation and elimination as a function of number of cigarettes smoked.
mesh_terms: D000328:Adult; D001944:Breath Tests; D002248:Carbon Monoxide / Q000378:metabolism*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012907:Smoking; D013997:Time Factors
chemical_list: D002248:Carbon Monoxide