Statistical analysis
Analysis of data was performed using SPSS (Statistical Package of Social Services) version 22. Quantitative variables were described as mean (± SD, standard deviation) and median (range) according to Shapiro test of normality. Qualitative variables were described as number and percentage. Chi-square test was used to compare qualitative variables between the two groups. Fisher exact test was used when one expected cell or more are less than five. Unpaired t-test was used to compare quantitative variables, in parametric data (SD < 30% of the mean). Mann Whitney test was used instead of unpaired 