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Longitudinal progression of the 6MWT. 6MWT for pediatric (blue) and adult (red) walkers. Data are listed as mean and 99% confidence interval. Available patients at baseline, m14, m26 and m38 are added. For a group size fewer than 10 patients no data are shown. As the performance of the 6MWT is not mandatory within the SMArtCARE data collection, data are not available for all patients at all time-points.
