Table-V.

Long-term recurrence rates [case (%)].

Group	Case No.	1 year after surgery	2 years after surgery	Total recurrence rate
A	50	1 (2)	0	1 (2)
B	50	4 (8)*	2 (4)*	6 (12)*
C	50	4 (8)*	2 (4)*	6 (12)*

^*Compared with Group-A, P<0.05.