After laparoscopic surgery , patients were randomized to three groups : in Group A ( n = @ ) oral contraceptive ( OC ) was administered one pill a day , continuous for @days without intervals , in Group B ( n = @ ) OC was administered as above and then Dan ' e mixture was added @g/day for the latter @days , and in control Group C ( n = @ ) patients tried to get pregnant after surgery without complementary treatment .