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  Indian J Med Microbiol
 

Table 2: Comparison of endotracheal tube size (mm) estimated by ultrasonography, height-based formula, and age-based formula with endotracheal tube size used clinically on the operating table by dependent t-test

Table 2: Comparison of endotracheal tube size (mm) estimated by ultrasonography, height-based formula, and age-based formula with endotracheal tube size used clinically on the operating table by dependent <i>t</i>-test