Statistical Analyze
The nominal data analysis was made by using Yates- corrected chi-square test. A comparison of parametric data between the two groups was made by using student tests. Pearson correlation coefficients were used to compare the relation of parameters with FMD. SPSS 17.0 (SPSS Inc., Chicago, IL, USA) statistical software program was used for all statistical analyses. A p-value less than 0.05 was considered significant.