In the group A , the effective rates at the 6 th months and one year after treatment were 73.5 % ( 25/34 ) and 52.9 % ( 18/34 ) ; in group B , they were 64.7 % ( 22/34 ) and 61.8 % ( 21/34 ) respectively , there were no significant differences between the two groups ( both P > 0.05 ) .
