SOD1 and laryngotracheoesophageal cleft: The levels of TAC (5.06 ± 1.40 vs. 4.23 ± 1.09, p-value < 0.001) and SOD (23.25 ± 11.96 vs. 18.02 ± 13.34, p-value < 0.001) in the LC group were found to be significantly higher after the intervention, compared to their baseline levels.