BMI	body mass index
CI	confidence interval
HPFS	Health Professionals Follow-up Study
MD	mean difference
NHS	Nurses’ Health Study
NSHD	Northern Sweden Health and Disease Study
PHS	Physicians’ Health Study
RCT	randomized controlled trial
RG	refined grain
SD	standard deviation
SE	standard error
SEM	standard error of the mean
SMD	standardized mean difference
SUN	Seguimiento Universidad de Navarra
WG	whole grain