3Prospective Studies Collaboration Age-specific relevance of usual blood pressure to vascular mortafity: a Meta-analysis of individual data for one million adults 61 prospective studies[J]. Lancet, 2002, 360:1 903-1 913.
4Cook NR, Cohen J, Hebert PR, et al. Implication of small reduction in diastolic blood pressure for primary prevention. Arch Inter Med, 1995, 155: 701-709.