Annotations of genes of frailty related CpGs can be consulted and downloaded via direct request at the website (http://emea.support.illumina.com/array/array_kits/infinium-methylationepic-beadchip-kit/downloads.html#). The underlying roles of these genes are available at (https://metascape.org). Results of mQTL can be downloaded from the online tool mQTLdb (http://www.mqtldb.org.