Of the two 30 patients in the control group and warm acupuncture group , 0 and 2 ( 6.7 % ) were cured , 7 ( 23.3 % ) and 25 ( 83.3 % ) experienced marked improvement , 17 ( 56.7 % ) and 2 ( 6.7 % ) were effective , 6 ( 20.0 % ) and 1 ( 3.3 % ) invalid , with the effective rates being 80.0 % and 96.7 % , respectively .