Table 1. Clinical characteristics of the subjects in current study.

	LSCC subjects	Control subjects
Age
≤60	11	13
>60	18	18
Gender
Male	27	27
Female	2	4
Tumor location
Supraglottic	11
Glottic	18
T classification
T1 and T2	12
T3 and T4	17
Tumor sizes
≤2 cm3	13
>2 cm3	16