Fig. 1From: Blood pressure changes during 22-year of follow-up in large general population - the HUNT Study, NorwayNonparametric kernel-density estimates for the distribution of systolic (a) and diastolic (b) blood pressure in HUNT1 (n = 74,519), HUNT2 (n = 64,523) and HUNT3 (n = 43,905)Back to article page