Table 1. Clinical sample information.

Total no. of sample	58
Age (mean ± S.D)	52 ± 11
Gender
Female	6
Male	52
Grade
1	25
2	9
3	4
Stage
I	0
II	6
III	14
IV	17
T
1	0
2	23
3	9
4	5
Lymph node metastasis
Y	29
N	10