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  Indian J Med Microbiol
 

Figure 5: Scatter plot showing significant positive correlation between serum Vitamin D level and 6-minute walk distance (Spearman rho = 0.698, P = 0.00) in (a) all patients, (b) smokers, (c) ex-smokers and (d) non-smokers

Figure 5: Scatter plot showing significant positive correlation between serum Vitamin D level and 6-minute walk distance (Spearman rho = 0.698, <i>P</i> = 0.00) in (a) all patients, (b) smokers, (c) ex-smokers and (d) non-smokers