The IELT was dramatically prolonged in groups A , B , and C after treatment ( -LSB- @ @ -RSB- , -LSB- @ @ -RSB- , and -LSB- @ @ -RSB- min ) and at @ month after drug withdrawal ( -LSB- @ @ -RSB- , -LSB- @ @ -RSB- , and -LSB- @ @ -RSB- min ) as compared with the baseline ( -LSB- @ @ -RSB- , -LSB- @ @ -RSB- , and -LSB- @ @ -RSB- min ) ( P < @ ) , even longer in group C than in A and B ( P < @ ) .