The age at entry into the study and the peak blood concentration of MZB of these patients were significantly higher than in four patients who did not show a decreased rate of relapse ( 12.3 A + / - 4.3 vs. 7.9 A + / - 2.6 years , p < 0.05 ; 3.00 A + / - 0.93 vs. 1.97 A + / - 0.36 microg/ml , p < 0.005 , respectively ) .
