Conversion among Methylation Array Data and WGBS Data

Question

[shrinka.genetics]

Hi

Illumina array data, like Infinium has denotation of CpG, like cg1692638 like that. Whereas in case of WGBS data CpGs are denoted like start and end position, which is just one bp apart for a particular CpG, like this.

chr start end

chr21 10011791 10013792

chr21 10119796 10121797

chr21 10119808 10121809

chr21 13331357 13333358

What is the most reliable method of conversion among each other?

[Basti]

You can retrieve CpG coordinates with 450k annotation, depending on the human genome release you are using