Figure 5 The comparison of quality of life of patients between the 2 groups. Questionnaire data from 15 patients in study groups showed scores of 8–67, while the control group had scores of 19–80 (possible range from 0 to 108). The scores were approximately normally distributed, and the average score of the study group and control group was 31.1 and 51.8, and the standard deviation was 18.3 and 14.8, respectively. *** P<0.001