Sample size and statistical analyze
Data from a preliminary study taking into account average VAS score at 2Statistical analysis was performed using statistical program (SPSS Statistics version 20.0-IBM, Armonk, NY,USA). Data normality was evaluated using the Kolmogorov–Smirnov test. Mann Whitney-U test was used for continuous data that did not show normal distribution. Independent t-test was used for normally distrubuted data. Fisher Exact test was used to evaluate categorical data. 