Fig. 1
Total area of specimens taken by rigid forceps, flexible forceps and cryobiopsy (in mm2, p-values represent results of ANOVA with Bonferroni correction). Boxplots are shown, outliers (values that are between 1.5 and 3 times the interquartile range) are represented by circles beyond the whiskers. Extreme values (values that are more than 3 times the interquartile range) are represented by asterisk beyond the whiskers