A comparative analysis was conducted between the control and PR groups using the t-test or Fisher's exact test for normally distributed and the Mann-Whitney U test for non-normally distributed baseline PFT, VAS, and mBS data. The Wilcoxon signed-rank test was used to compare the parameters at follow-up. Values are presented as mean±standard deviation, numbers (%), or medians (25th-75th percentile). All statistical tests were conducted using SPSS software ver. 18.0 (SPSS Inc., Chicago, IL, USA).