Statistical analysis
A statistician performed statistical analyses, using SPSS version 16.0 (SPSS Inc., Chicago, IL, USA). The Kolmogorov-Smirnov and Levene tests were used to check the normal distribution of variables and homogeneity of variance, respectively. We used mixed-model ANOVA to evaluate the effects of the interaction between time (baseline vs. post-treatment vs. 6-month follow-up) and group (CFT vs. MSI) on each measure. We used Bonferroni correction to assess changes in each group across the three-time points. For each variable, we calculated the percentage of change compared with baseline. We also conducted intention-to-treat analyses for all randomized patients, including those who dropped out. Cohen’s d was used to calculate effect sizes (ES), which were classified as small (d < 0.20), medium (d = 0.21–0.79), or large (d > 0.80) [