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Relationships between six-minute walking distance (6MWD) and age (r=-0.219, p<0.001) (A), 6MWD and height (r=0.453, p<0.001) (B), and 6MWD and weight (r=0.355, p<0.001) (C). The linear regression line is superimposed, surrounded with the 95% confidence interval lines for the regression line.
