CpG	cytosine-phosphate-guanine
EWAS	epigenome-wide association study
NTR	Netherlands Twin Register
ALSPAC	Avon Longitudinal Study of Parents and Children
SES	socio-economic status
GA	gestational age
BMI	body mass index
GEE	generalized estimating equations
mQTL	methylation quantitative trait locus
SNP	single nucleotide polymorphism
MZ	monozygotic
DZ	dizygotic