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  Indian J Med Microbiol
 

Figure 5: Box error plot showing the correlation between maximal inspiratory pressure and different stages of chronic obstructive pulmonary disease severity (GOLD criteria). 1 - Mild, 2 - Moderate, 3 - Severe, 4 - Very Severe

Figure 5: Box error plot showing the correlation between maximal inspiratory pressure and different stages of chronic obstructive pulmonary disease severity (GOLD criteria). 1 - Mild, 2 - Moderate, 3 - Severe, 4 - Very Severe