Kruskal-Wallis test was used to compare the non-normal data among groups. For multiple comparisons between the pair-wise groups, Bonferroni-Correction Mann Whitney U test was used. A p-value <.05 was considered significant. The kappa coefficient was used to determine interexaminer agreement. Analyses were performed using SPSS 19 (IBM SPSS Statistics 19, SPSS Inc., Somers, NY).