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Figure 3: Assessment of Chest Radiography quality in Lao PDR  Sum scores of pre and posttraining, Assessment scores of 4 items for density(black diamond shape) Median sum of item scores Vertical straight line indicates the interquartile range of the sum of scores. LF: lung field, LP: lung periphery, ME: mediastinum, CS: cardiac shadow 1: Assessment point before the training course. 2: Assessment point after the training course. Pvalue by Wilcoxon matched pairs test. *Pvalue<0.05. 
