3Gueyffier F, Bulpitt C, Boissel JP, et al. Antihypertensive drugsin very old people : a subgroup meta - analysis of randomized con-trolled trials[ J]. Lancet, 1999, 353: 793 - 796.
7UKPDS, Group. Tight blood pressure control and risk of macro-vascular and microvascular complications in type 2 diabetes ( UK-PDS 38)[J]. BMJ, 1998,317:703 -713.