Erratum
In the article cited above, figures 5 and 6 were incorrectly switched.
The correct listing should be:

Analysis of S100A9 methylation. Bisulfite sequencing of 6 CpG sites in the S100A9 promoter region (top) in selected cell lines and tissue samples. See legend to Figure 3 for further explanations.

Analysis of LCN2 methylation. Bisulfite sequencing analysis of 5 CpG sites in the LCN2 promoter region (top) in selected cell lines and tissue samples. See legend to Figure 3 for further explanations.
The publisher apologizes for any confusion caused by this error.