highly significantp < 0.001
3 , 4 , 5 , 6 , 7 , 8 ) Statistical analysis confirmed these differences to be highly significant (log-rank test, p < 0.001).
3 , 4 , 5 , 6 , 7 , 8 ) Statistical analysis confirmed these differences to be highly significant (log-rank test, p < 0.001).