highly significantP < 0.01
Mann–Whitney U test was used to compare groups and statistical significance was inferred at P < 0.05 (*), highly significant P < 0.01 (**) and very highly significant P < 0.001 (***).
Mann–Whitney U test was used to compare groups and statistical significance was inferred at P < 0.05 (*), highly significant P < 0.01 (**) and very highly significant P < 0.001 (***).