Colorimetric assessment of smoking status and relative daily nicotine intakes.
Ellard
G A
GA
D003124:Colorimetry / Q000379:methods* / Q000706:statistics & numerical data; D006801:Humans; D009538:Nicotine / Q000652:urine*; D012907:Smoking / Q000652:urine*
D009538:Nicotine