[Retracted] Cigarette Smoke Regulates the Expression of EYA4 via Alternation of DNA Methylation Status

Table 1

Clinical and demographic data of the study participants.

Variable	Smokers	Nonsmokers
Number	50	50
Age (years),
Age (years)
≤30 years	31 (62%)	18 (36%)
>30 years	19 (38%)	32 (64%)
Years of smoking
≤12 years	26 (52%)	—
>12 years	24 (48%)	—