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Comparison of exhaled breath condensate (EBC) 8-isoprostane (8-IP) concentrations in sarcoidosis patients divided according to radiological stages. There was a significant difference between stages estimated by Kruskal-Wallis test (p = 0.03). The Dunn's Multiple Comparison post-test showed the significant difference between stage I and III (p < 0.05). There were no differences between stage I and II and stage II and III (p > 0.05).
