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(A) Serum melatonin and (B) serum 6-hydroxymelatonin sulfate levels in pregnant women (n = 15) 3–6 days before and 24 h after elective C-section (MEL-P2). Levels were significantly after C-section (P = 0.0013 and P = 0.005 respectively, Wilcoxon-Mann Whitney test). Data are shown as median, interquartile, and full range.
