The success and recurrence rate at 12-month followup were , respectively , 38.3 % ( 28/73 ) in group I versus 58.5 % ( 41/70 ) in group II ( P = 0.019 ; Fisher 's exact test ) and 30.2 % ( 13/43 ) in group I versus 14.5 % ( 7/48 ) in group II ( P = 0.0047 ; Fisher 's exact test ) .