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  Indian J Med Microbiol
 

Figure 2 ROC curve of optimal cut-off level of PEFR ≤225 L/min associated with treatment failure with sensitivity of 74.1 % and specificity of 69.6%.

Figure 2 ROC curve of optimal cut-off level of PEFR ≤225 L/min associated with treatment failure with sensitivity of 74.1 % and specificity of 69.6%.