Development of a Method to Detect Three Monohydroxylated Polycyclic Aromatic Hydrocarbons in Human Urine by Liquid Chromatographic Tandem Mass Spectrometry

Table 1

Demographics of subjects.

	Gender	Age (years)	Smoking habits (number)
Nonsmokers ()	Man	22.34 ± 1.46
Smokers ()	78 men,; 3 women	22.95 ± 2.10	9.50 ± 5.30

The results were expressed as mean ± standard deviation.