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Maternal (A) and paternal (B) Hazard Ratio (HR) with 95% Confidence Interval (C. I.) for cardiovascular death (CVD) by offspring birth weight in singleton first births in Norway (1967–2002) with follow-up to 2009. Estimates were adjusted for maternal age and year of birth (711 726 mothers of which 2279 died and 700 212 fathers of which 10 163 died).
