highly significantP values of ≤ 0.01
Data were analysed using the Mann–Whitney U test, in which differences were considered significant (*) at P values of ≤ 0.05 and highly significant (**) at P values of ≤ 0.01.
Data were analysed using the Mann–Whitney U test, in which differences were considered significant (*) at P values of ≤ 0.05 and highly significant (**) at P values of ≤ 0.01.