highly significantP < 0.001
Statistical analysis confirmed that the improvement was significant between SP1 and SP2 ( P < 0.01) and highly significant between SP1 and SP3 ( P < 0.001) ( Figure 3A ).
Statistical analysis confirmed that the improvement was significant between SP1 and SP2 ( P < 0.01) and highly significant between SP1 and SP3 ( P < 0.001) ( Figure 3A ).