Conflicts of Interest
calcification
REGRESSION, RECRUITMENT
The authors have no conflict of interest to declare.Flow diagram of patient recruitment.Descriptive statistics of all outcomes in this study.The comparisons of outcomes with descriptive statistics (mean ± standard deviation), test statistics, 
The ‘pre-post' analysis of VAS and calcification.
The analysis of change of calcification and VAS.
The distribution of VAS change.The distribution of calcification change.The logistic regression.The correlation coefficients for both groups, separately.The partial correlation analysis.