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Figure 3: Urine concentrations of salmeterol (ngmL-1) in asthmatics and non-asthmatics, 4 (T4), 8 (T8) and 12 hours (T12) after administration of 100 µg inhaled salmeterol (medianħinterquartile range). *Significant different (p<0.05) from T8 and T12. |