Exhaled breath condensate to discriminate individuals with different smoking habits by GC-TOF/MS.

Among these compounds, listed in Table 3 , it is worth mentioning five that were highly significant, with a p -value below 0.01: indole ( p -value 0.0006), undecanol (0.0036) and three phenolic compounds such as p -cresol (0.0065), 2,4,6-tris(1-methylethyl)-phenol (0.0032) and 2,6-bis(1,1-dimethylethyl)-4-(1-methyl-1-phenylethyl)-phenol (0.0031).

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