Fig. 2From: Determination of 11 minerals in children using inductively coupled plasma mass spectrometryHeat map showing the Spearman’s correlation coefficients of serum levels of 11 minerals. The color corresponds to the strength of correlations (blue: positive correlation; white: no correlation; red: negative correlation),* P < 0.05, ** P < 0.01, *** P < 0.0001Back to article page